257868039 has 32 divisors (see below), whose sum is σ = 407199744. Its totient is φ = 143095680.

The previous prime is 257868011. The next prime is 257868043. The reversal of 257868039 is 930868752.

It is not a de Polignac number, because 257868039 - 2⁸ = 257867783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257868139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52117 + ... + 56849.

It is an arithmetic number, because the mean of its divisors is an integer number (12724992).

Almost surely, 2^257868039 is an apocalyptic number.

257868039 is a deficient number, since it is larger than the sum of its proper divisors (149331705).

257868039 is a wasteful number, since it uses less digits than its factorization.

257868039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 257868039 is about 16058.2701123128. The cubic root of 257868039 is about 636.5011205169.

The spelling of 257868039 in words is "two hundred fifty-seven million, eight hundred sixty-eight thousand, thirty-nine".