404881140 has 48 divisors (see below), whose sum is σ = 1135636992. Its totient is φ = 107780736.

The previous prime is 404881063. The next prime is 404881159. The reversal of 404881140 is 41188404.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 404881098 and 404881107.

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, 30862 + ... + 41978.

It is an arithmetic number, because the mean of its divisors is an integer number (23659104).

Almost surely, 2^404881140 is an apocalyptic number.

It is an amenable number.

404881140 is an abundant number, since it is smaller than the sum of its proper divisors (730755852).

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

404881140 is a wasteful number, since it uses less digits than its factorization.

404881140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736 (or 11734 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 404881140 is about 20121.6584803539. The cubic root of 404881140 is about 739.7912364601.

The spelling of 404881140 in words is "four hundred four million, eight hundred eighty-one thousand, one hundred forty".