400530608 has 20 divisors (see below), whose sum is σ = 821677320. Its totient is φ = 188484864.

The previous prime is 400530607. The next prime is 400530617. The reversal of 400530608 is 806035004.

It is not an unprimeable number, because it can be changed into a prime (400530601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735998 + ... + 736541.

It is an arithmetic number, because the mean of its divisors is an integer number (41083866).

Almost surely, 2^400530608 is an apocalyptic number.

It is an amenable number.

400530608 is an abundant number, since it is smaller than the sum of its proper divisors (421146712).

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

400530608 is a wasteful number, since it uses less digits than its factorization.

400530608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472564 (or 1472558 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 400530608 is about 20013.2608037771. The cubic root of 400530608 is about 737.1319518734.

The spelling of 400530608 in words is "four hundred million, five hundred thirty thousand, six hundred eight".