257123682 has 12 divisors (see below), whose sum is σ = 557101350. Its totient is φ = 85707888.

The previous prime is 257123663. The next prime is 257123701. The reversal of 257123682 is 286321752.

257123682 is a `hidden beast` number, since 2 + 571 + 2 + 3 + 6 + 82 = 666.

257123682 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (257123663) and next prime (257123701).

It can be written as a sum of positive squares in only one way, i.e., 232532001 + 24591681 = 15249^2 + 4959^2 .

It is a super-2 number, since 2×257123682² = 132225175690474248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7142307 + ... + 7142342.

Almost surely, 2^257123682 is an apocalyptic number.

257123682 is an abundant number, since it is smaller than the sum of its proper divisors (299977668).

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

257123682 is a wasteful number, since it uses less digits than its factorization.

257123682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14284657 (or 14284654 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 257123682 is about 16035.0766134746. The cubic root of 257123682 is about 635.8880929248. Note that the first 3 decimals are identical.

The spelling of 257123682 in words is "two hundred fifty-seven million, one hundred twenty-three thousand, six hundred eighty-two".