256503234 has 16 divisors (see below), whose sum is σ = 552468672. Its totient is φ = 78924048.

The previous prime is 256503227. The next prime is 256503253. The reversal of 256503234 is 432305652.

It is an alternating number because its digits alternate between even and odd.

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, 1644174 + ... + 1644329.

It is an arithmetic number, because the mean of its divisors is an integer number (34529292).

Almost surely, 2^256503234 is an apocalyptic number.

256503234 is an abundant number, since it is smaller than the sum of its proper divisors (295965438).

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

256503234 is a wasteful number, since it uses less digits than its factorization.

256503234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288521.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 256503234 is about 16015.7183416792. The cubic root of 256503234 is about 635.3762079298.

Adding to 256503234 its reverse (432305652), we get a palindrome (688808886).

The spelling of 256503234 in words is "two hundred fifty-six million, five hundred three thousand, two hundred thirty-four".