257996998 has 32 divisors (see below), whose sum is σ = 469545984. Its totient is φ = 103788672.

The previous prime is 257996971. The next prime is 257997017. The reversal of 257996998 is 899699752.

257996998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (22044960) is a multiple of the sum of its prime divisors (2916).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104211 + ... + 106657.

It is an arithmetic number, because the mean of its divisors is an integer number (14673312).

Almost surely, 2^257996998 is an apocalyptic number.

257996998 is a deficient number, since it is larger than the sum of its proper divisors (211548986).

257996998 is a wasteful number, since it uses less digits than its factorization.

257996998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916.

The product of its digits is 22044960, while the sum is 64.

The square root of 257996998 is about 16062.2849557589. The cubic root of 257996998 is about 636.6072069078.

The spelling of 257996998 in words is "two hundred fifty-seven million, nine hundred ninety-six thousand, nine hundred ninety-eight".