257880712 has 8 divisors (see below), whose sum is σ = 483526350. Its totient is φ = 128940352.

The previous prime is 257880709. The next prime is 257880719. The reversal of 257880712 is 217088752.

It can be written as a sum of positive squares in only one way, i.e., 214505316 + 43375396 = 14646^2 + 6586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (257880719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16117537 + ... + 16117552.

Almost surely, 2^257880712 is an apocalyptic number.

It is an amenable number.

257880712 is a deficient number, since it is larger than the sum of its proper divisors (225645638).

257880712 is a wasteful number, since it uses less digits than its factorization.

257880712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32235095 (or 32235091 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 257880712 is about 16058.6647016494. The cubic root of 257880712 is about 636.5115473572.

The spelling of 257880712 in words is "two hundred fifty-seven million, eight hundred eighty thousand, seven hundred twelve".