404255256 has 64 divisors (see below), whose sum is σ = 1042502400. Its totient is φ = 130569600.

The previous prime is 404255251. The next prime is 404255263. The reversal of 404255256 is 652552404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404255251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98526 + ... + 102546.

It is an arithmetic number, because the mean of its divisors is an integer number (16289100).

Almost surely, 2^404255256 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 404255256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521251200).

404255256 is an abundant number, since it is smaller than the sum of its proper divisors (638247144).

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

404255256 is a wasteful number, since it uses less digits than its factorization.

404255256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160 (or 4156 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 404255256 is about 20106.0999699096. The cubic root of 404255256 is about 739.4098386906.

The spelling of 404255256 in words is "four hundred four million, two hundred fifty-five thousand, two hundred fifty-six".