257835128 has 16 divisors (see below), whose sum is σ = 483787080. Its totient is φ = 128825248.

The previous prime is 257835119. The next prime is 257835139. The reversal of 257835128 is 821538752.

257835128 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, 1151 + ... + 22737.

Almost surely, 2^257835128 is an apocalyptic number.

It is an amenable number.

257835128 is a deficient number, since it is larger than the sum of its proper divisors (225951952).

257835128 is a wasteful number, since it uses less digits than its factorization.

257835128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23086 (or 23082 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 257835128 is about 16057.2453428351. The cubic root of 257835128 is about 636.4740410597.

The spelling of 257835128 in words is "two hundred fifty-seven million, eight hundred thirty-five thousand, one hundred twenty-eight".