Number 19881 - properties and curiosities

19881 (number)

19881

Number 19881 properties

  • Perfect square
  • 19881 is an odd number.
  • 19881 is a perfect square (141 × 141).

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.

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