20259136 has 28 divisors (see below), whose sum is σ = 41952672. Its totient is φ = 9688448.

The previous prime is 20259133. The next prime is 20259143. The reversal of 20259136 is 63195202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20259133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5410 + ... + 8353.

Almost surely, 2^20259136 is an apocalyptic number.

It is an amenable number.

20259136 is an abundant number, since it is smaller than the sum of its proper divisors (21693536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20259136 is a wasteful number, since it uses less digits than its factorization.

20259136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13798 (or 13788 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20259136 is about 4501.0149966424. The cubic root of 20259136 is about 272.6090734131.

The spelling of 20259136 in words is "twenty million, two hundred fifty-nine thousand, one hundred thirty-six".