400480880 has 20 divisors (see below), whose sum is σ = 931118232. Its totient is φ = 160192320.

The previous prime is 400480867. The next prime is 400480903. The reversal of 400480880 is 88084004.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502926 + ... + 2503085.

Almost surely, 2^400480880 is an apocalyptic number.

400480880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400480880 is an abundant number, since it is smaller than the sum of its proper divisors (530637352).

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

400480880 is a wasteful number, since it uses less digits than its factorization.

400480880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006024 (or 5006018 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 400480880 is about 20012.0183889582. The cubic root of 400480880 is about 737.1014443299.

The spelling of 400480880 in words is "four hundred million, four hundred eighty thousand, eight hundred eighty".