404253256 has 24 divisors (see below), whose sum is σ = 833147910. Its totient is φ = 183751040.

The previous prime is 404253233. The next prime is 404253263. The reversal of 404253256 is 652352404.

It can be written as a sum of positive squares in only one way, i.e., 389430756 + 14822500 = 19734^2 + 3850^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207841 + ... + 209776.

Almost surely, 2^404253256 is an apocalyptic number.

It is an amenable number.

404253256 is an abundant number, since it is smaller than the sum of its proper divisors (428894654).

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

404253256 is a wasteful number, since it uses less digits than its factorization.

404253256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417645 (or 417630 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 404253256 is about 20106.0502336983. The cubic root of 404253256 is about 739.4086193108.

It can be divided in two parts, 40425 and 3256, that added together give a square (43681 = 209²).

The spelling of 404253256 in words is "four hundred four million, two hundred fifty-three thousand, two hundred fifty-six".