257047004 has 36 divisors (see below), whose sum is σ = 480430440. Its totient is φ = 120311040.

The previous prime is 257046997. The next prime is 257047013. The reversal of 257047004 is 400740752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264239 + ... + 265209.

It is an arithmetic number, because the mean of its divisors is an integer number (13345290).

Almost surely, 2^257047004 is an apocalyptic number.

It is an amenable number.

257047004 is a deficient number, since it is larger than the sum of its proper divisors (223383436).

257047004 is a wasteful number, since it uses less digits than its factorization.

257047004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 257047004 is about 16032.6854893371. The cubic root of 257047004 is about 635.8248762989.

Adding to 257047004 its reverse (400740752), we get a palindrome (657787756).

The spelling of 257047004 in words is "two hundred fifty-seven million, forty-seven thousand, four".