257880896 has 56 divisors (see below), whose sum is σ = 629838720. Its totient is φ = 102016512.

The previous prime is 257880877. The next prime is 257880907. The reversal of 257880896 is 698088752.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16316 + ... + 27963.

It is an arithmetic number, because the mean of its divisors is an integer number (11247120).

Almost surely, 2^257880896 is an apocalyptic number.

257880896 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

257880896 is an abundant number, since it is smaller than the sum of its proper divisors (371957824).

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

257880896 is a wasteful number, since it uses less digits than its factorization.

257880896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44311 (or 44301 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 257880896 is about 16058.6704306428. The cubic root of 257880896 is about 636.5116987425.

The spelling of 257880896 in words is "two hundred fifty-seven million, eight hundred eighty thousand, eight hundred ninety-six".