Number 81840

Interestingness: 9

Visual representations

Binary image (n×n bits)
2⁴351131
Prime factorization

Representations of 81840

Greek numeral
η
Μ
͵αωμ
Sanskrit numeral
८१८४०
Arabic numeral
٨١٨٤٠
Roman numeral
LXXXMDCCCXL
Maya numeral
▃▃▃▃▃
▃▃▃▃▃
●●●●
●●
▃▃▃▃▃
▃▃▃▃▃
ↂ
Chinese numeral
八万一千八百四十
Hebrew numeral
פא׳ תתמ
Egyptian numeral
𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓂭
𓆼
𓈖𓈖𓈖𓈖𓈖𓈖𓈖𓈖
𓎆𓎆𓎆𓎆
Morse code
---...-------......------

81840 in different numeral systems

Binary
10011111110110000
Base-3
11011021010
Base-4
103332300
Base-5
10104330
Base-6
1430520
Base-7
460413
Base-8
237660
Duodecimal
3b440
Hex
13fb0
Vigesimal
a4c0
Base-24
5m20
Base-36
1r5c
Negabinary
10100000011110000

Factorization

Prime factors: 2, 3, 5, 11, 31
Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 33, 40, 44, 48, 55, 60, 62, 66, 80, 88, 93, 110, 120, 124, 132, 155, 165, 176, 186, 220, 240, 248, 264, 310, 330, 341, 372, 440, 465, 496, 528, 620, 660, 682, 744, 880, 930, 1023, 1240, 1320, 1364, 1488, 1705, 1860, 2046, 2480, 2640, 2728, 3410, 3720, 4092, 5115, 5456, 6820, 7440, 8184, 10230, 13640, 16368, 20460, 27280, 40920, 81840
Sum of divisors other than 81840: 203856
Product of prime factors: 81840 = 2 × 2 × 2 × 2 × 3 × 5 × 11 × 31

Number-theory characteristics (6)

Difference of 2 squares Evil number Refactorable Even Composite Abundant

Base-10 digit properties (1)

These depend on the decimal representation of the number.

Duck number

Related primes

Prime number before 81840
Prime number after 81840