257089904 has 20 divisors (see below), whose sum is σ = 506556120. Its totient is φ = 126365760.

The previous prime is 257089897. The next prime is 257089933. The reversal of 257089904 is 409980752.

It is a happy number.

257089904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135227 + ... + 137114.

It is an arithmetic number, because the mean of its divisors is an integer number (25327806).

Almost surely, 2^257089904 is an apocalyptic number.

It is an amenable number.

257089904 is a deficient number, since it is larger than the sum of its proper divisors (249466216).

257089904 is a wasteful number, since it uses less digits than its factorization.

257089904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272408 (or 272402 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 257089904 is about 16034.0233254165. The cubic root of 257089904 is about 635.8602464445.

The spelling of 257089904 in words is "two hundred fifty-seven million, eighty-nine thousand, nine hundred four".