257198968 has 16 divisors (see below), whose sum is σ = 519344280. Its totient is φ = 118707168.

The previous prime is 257198959. The next prime is 257198987. The reversal of 257198968 is 869891752.

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, 1236430 + ... + 1236637.

Almost surely, 2^257198968 is an apocalyptic number.

It is an amenable number.

257198968 is an abundant number, since it is smaller than the sum of its proper divisors (262145312).

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

257198968 is a wasteful number, since it uses less digits than its factorization.

257198968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473086 (or 2473082 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The square root of 257198968 is about 16037.4239826725. The cubic root of 257198968 is about 635.9501496996.

The spelling of 257198968 in words is "two hundred fifty-seven million, one hundred ninety-eight thousand, nine hundred sixty-eight".