Number 21540

Interestingness: 8

Visual representations

Binary image (n×n bits)
Pentagonal · P5(120) = 21540
35359
Prime factorization

Representations of 21540

β
Μ
͵αφμ
२१५४०
٢١٥٤٠
XXMDXL
●●
●●●
▃▃▃▃▃
▃▃▃▃▃
●●
▃▃▃▃▃
▃▃▃▃▃
▃▃▃▃▃
二万一千五百四十
כא׳ תקמ
𓂭𓂭
𓆼
𓈖𓈖𓈖𓈖𓈖
𓎆𓎆𓎆𓎆
..---.----.........------

21540 in different numeral systems

Binary
101010000100100
Base-3
1002112210
Base-4
Base-5
Base-6
Base-7
Base-8
Duodecimal
Hex
Vigesimal
2dh0
Base-24
1d9c
Base-36
gmc
Negabinary
101010001100100

Factorization

Prime factors: 2, 3, 5, 359
Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 359, 718, 1077, 1436, 1795, 2154, 3590, 4308, 5385, 7180, 10770, 21540
Sum of divisors other than 21540: 38940
Product of prime factors: 21540 = 2 × 2 × 3 × 5 × 359

Number-theory characteristics (6)

Pentagonal Difference of 2 squares Odious number Even Composite Abundant

Base-10 digit properties (2)

These depend on the decimal representation of the number.

Harshad Duck number

Related primes

Prime number before 21540
Prime number after 21540