257868038 has 16 divisors (see below), whose sum is σ = 415825920. Its totient is φ = 119548296.

The previous prime is 257868011. The next prime is 257868043. The reversal of 257868038 is 830868752.

257868038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 257867983 and 257868001.

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, 70406 + ... + 73977.

It is an arithmetic number, because the mean of its divisors is an integer number (25989120).

Almost surely, 2^257868038 is an apocalyptic number.

257868038 is a deficient number, since it is larger than the sum of its proper divisors (157957882).

257868038 is a wasteful number, since it uses less digits than its factorization.

257868038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144451.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 257868038 is about 16058.2700811762. The cubic root of 257868038 is about 636.5011196941.

The spelling of 257868038 in words is "two hundred fifty-seven million, eight hundred sixty-eight thousand, thirty-eight".