256072404 has 48 divisors (see below), whose sum is σ = 686336000. Its totient is φ = 72791136.

The previous prime is 256072391. The next prime is 256072423. The reversal of 256072404 is 404270652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9057 + ... + 24375.

Almost surely, 2^256072404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256072404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343168000).

256072404 is an abundant number, since it is smaller than the sum of its proper divisors (430263596).

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

256072404 is a wasteful number, since it uses less digits than its factorization.

256072404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15532 (or 15530 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 256072404 is about 16002.2624650391. The cubic root of 256072404 is about 635.0202766997.

The spelling of 256072404 in words is "two hundred fifty-six million, seventy-two thousand, four hundred four".