19881
Number 19881 properties
- 19881 is an odd number.
- 19881 is a perfect square (141 × 141).
Number 19881 - properties and curiosities
19881 (number)
Prime factorization
Prime factorization of 19881: 3^2 × 47^2.
Divisors
Divisor count: 9
1, 3, 9, 47, 141, 423, 2209, 6627, 19881
Factors of 19881 are: 1, 3, 9, 47, 141, 423, 2209, 6627, 19881.
Representations
In octal, 19881 is represented as 46651.
In binary, 19881 is represented as 100110110101001.
In hex, 19881 is represented as 4DA9.
Roman numeral: Roman numerals are shown only for 1 to 4999.
Curiosities
- 19881 is a perfect square, so it forms a square grid with equal side lengths.
Related numbers
Nearby primes: 19853, 19861, 19867, 19889, 19891, 19913
Quick answers
Is 19881 prime?
No, 19881 is not prime.
What are the factors of 19881?
1, 3, 9, 47, 141, 423, 2209, 6627, 19881
What is 19881 in binary?
100110110101001