257072630 has 16 divisors (see below), whose sum is σ = 465156864. Its totient is φ = 102289920.

The previous prime is 257072609. The next prime is 257072681. The reversal of 257072630 is 36270752.

It is a happy number.

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, 65387 + ... + 69206.

It is an arithmetic number, because the mean of its divisors is an integer number (29072304).

Almost surely, 2^257072630 is an apocalyptic number.

257072630 is a deficient number, since it is larger than the sum of its proper divisors (208084234).

257072630 is a wasteful number, since it uses less digits than its factorization.

257072630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134791.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 257072630 is about 16033.4846493206. The cubic root of 257072630 is about 635.8460048689.

The spelling of 257072630 in words is "two hundred fifty-seven million, seventy-two thousand, six hundred thirty".