256253304 has 128 divisors (see below), whose sum is σ = 718502400. Its totient is φ = 75778560.

The previous prime is 256253293. The next prime is 256253351. The reversal of 256253304 is 403352652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555634 + ... + 556094.

It is an arithmetic number, because the mean of its divisors is an integer number (5613300).

Almost surely, 2^256253304 is an apocalyptic number.

256253304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256253304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359251200).

256253304 is an abundant number, since it is smaller than the sum of its proper divisors (462249096).

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

256253304 is a wasteful number, since it uses less digits than its factorization.

256253304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 561 counting only the distinct ones).

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

The square root of 256253304 is about 16007.9137928713. The cubic root of 256253304 is about 635.1697762502.

The spelling of 256253304 in words is "two hundred fifty-six million, two hundred fifty-three thousand, three hundred four".