257829668 has 12 divisors (see below), whose sum is σ = 457936752. Its totient is φ = 126990600.

The previous prime is 257829643. The next prime is 257829673. The reversal of 257829668 is 866928752.

It is a super-2 number, since 2×257829668² = 132952275401980448, which contains 22 as substring.

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, 480758 + ... + 481293.

It is an arithmetic number, because the mean of its divisors is an integer number (38161396).

Almost surely, 2^257829668 is an apocalyptic number.

It is an amenable number.

257829668 is a deficient number, since it is larger than the sum of its proper divisors (200107084).

257829668 is a wasteful number, since it uses less digits than its factorization.

257829668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962122 (or 962120 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 257829668 is about 16057.0753252266. The cubic root of 257829668 is about 636.4695483013.

The spelling of 257829668 in words is "two hundred fifty-seven million, eight hundred twenty-nine thousand, six hundred sixty-eight".