257694132 has 12 divisors (see below), whose sum is σ = 601286336. Its totient is φ = 85898040.

The previous prime is 257694097. The next prime is 257694163. The reversal of 257694132 is 231496752.

It is a tau number, because it is divible by the number of its divisors (12).

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, 10737244 + ... + 10737267.

Almost surely, 2^257694132 is an apocalyptic number.

It is an amenable number.

257694132 is an abundant number, since it is smaller than the sum of its proper divisors (343592204).

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

257694132 is a wasteful number, since it uses less digits than its factorization.

257694132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21474518 (or 21474516 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 257694132 is about 16052.8543256332. The cubic root of 257694132 is about 636.3580022334.

The spelling of 257694132 in words is "two hundred fifty-seven million, six hundred ninety-four thousand, one hundred thirty-two".