257603234 has 16 divisors (see below), whose sum is σ = 441885888. Its totient is φ = 110331312.

The previous prime is 257603233. The next prime is 257603237. The reversal of 257603234 is 432306752.

It is a super-4 number, since 4×257603234⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257603234.

It is not an unprimeable number, because it can be changed into a prime (257603233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21377 + ... + 31179.

It is an arithmetic number, because the mean of its divisors is an integer number (27617868).

Almost surely, 2^257603234 is an apocalyptic number.

257603234 is a deficient number, since it is larger than the sum of its proper divisors (184282654).

257603234 is a wasteful number, since it uses less digits than its factorization.

257603234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 257603234 is about 16050.0228660273. The cubic root of 257603234 is about 636.2831713065.

Adding to 257603234 its reverse (432306752), we get a palindrome (689909986).

The spelling of 257603234 in words is "two hundred fifty-seven million, six hundred three thousand, two hundred thirty-four".