20259256 has 16 divisors (see below), whose sum is σ = 38795040. Its totient is φ = 9913920.

The previous prime is 20259247. The next prime is 20259277. The reversal of 20259256 is 65295202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26565 + ... + 27316.

It is an arithmetic number, because the mean of its divisors is an integer number (2424690).

Almost surely, 2^20259256 is an apocalyptic number.

It is an amenable number.

20259256 is a deficient number, since it is larger than the sum of its proper divisors (18535784).

20259256 is a wasteful number, since it uses less digits than its factorization.

20259256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53934 (or 53930 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 20259256 is about 4501.0283269493. The cubic root of 20259256 is about 272.6096116563.

The spelling of 20259256 in words is "twenty million, two hundred fifty-nine thousand, two hundred fifty-six".