257680132 has 36 divisors (see below), whose sum is σ = 481614336. Its totient is φ = 120569680.

The previous prime is 257680127. The next prime is 257680177. The reversal of 257680132 is 231086752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98157 + ... + 100747.

It is an arithmetic number, because the mean of its divisors is an integer number (13378176).

Almost surely, 2^257680132 is an apocalyptic number.

It is an amenable number.

257680132 is a deficient number, since it is larger than the sum of its proper divisors (223934204).

257680132 is a wasteful number, since it uses less digits than its factorization.

257680132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2663 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 257680132 is about 16052.4182601875. The cubic root of 257680132 is about 636.3464780111.

The spelling of 257680132 in words is "two hundred fifty-seven million, six hundred eighty thousand, one hundred thirty-two".