Number 21980

Interestingness: 7

Visual representations

Binary image (n×n bits)
2²57157
Prime factorization

Representations of 21980

Greek numeral
β
Μ
͵αϡπ
Sanskrit numeral
२१९८०
Arabic numeral
٢١٩٨٠
Roman numeral
XXMCMLXXX
Maya numeral
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▃▃▃▃▃
▃▃▃▃▃
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▃▃▃▃▃
▃▃▃▃▃
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ↂ
Chinese numeral
二万一千九百八十
Hebrew numeral
כא׳ תתקפ
Egyptian numeral
𓂭𓂭
𓆼
𓈖𓈖𓈖𓈖𓈖𓈖𓈖𓈖𓈖
𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Morse code
..---.--------.---..-----

21980 in different numeral systems

Binary
101010111011100
Base-3
1010011002
Base-4
11113130
Base-5
1200410
Base-6
245432
Base-7
121040
Base-8
52734
Duodecimal
10878
Hex
55dc
Vigesimal
2ej0
Base-24
1e3k
Base-36
gyk
Negabinary
11010101000101100

Factorization

Prime factors: 2, 5, 7, 157
Divisors: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 10990, 21980
Sum of divisors other than 21980: 31108
Product of prime factors: 21980 = 2 × 2 × 5 × 7 × 157

Number-theory characteristics (5)

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 21980
Prime number after 21980