404556880 has 160 divisors (see below), whose sum is σ = 1177924608. Its totient is φ = 125798400.

The previous prime is 404556839. The next prime is 404556883. The reversal of 404556880 is 88655404.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404556883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443625 + ... + 444535.

Almost surely, 2^404556880 is an apocalyptic number.

404556880 is a gapful number since it is divisible by the number (40) 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 404556880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588962304).

404556880 is an abundant number, since it is smaller than the sum of its proper divisors (773367728).

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

404556880 is a wasteful number, since it uses less digits than its factorization.

404556880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 404556880 is about 20113.5993795243. The cubic root of 404556880 is about 739.5936897807.

The spelling of 404556880 in words is "four hundred four million, five hundred fifty-six thousand, eight hundred eighty".