400574720 has 288 divisors, whose sum is σ = 1249946880. Its totient is φ = 119439360.

The previous prime is 400574609. The next prime is 400574737. The reversal of 400574720 is 27475004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2213030 + ... + 2213210.

Almost surely, 2^400574720 is an apocalyptic number.

400574720 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 400574720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624973440).

400574720 is an abundant number, since it is smaller than the sum of its proper divisors (849372160).

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

400574720 is a wasteful number, since it uses less digits than its factorization.

400574720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 400574720 is about 20014.3628427187. The cubic root of 400574720 is about 737.1590119535.

The spelling of 400574720 in words is "four hundred million, five hundred seventy-four thousand, seven hundred twenty".