400415632 has 20 divisors (see below), whose sum is σ = 781390960. Its totient is φ = 198766368.

The previous prime is 400415629. The next prime is 400415641. The reversal of 400415632 is 236514004.

It is a junction number, because it is equal to n+sod(n) for n = 400415597 and 400415606.

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, 87798 + ... + 92245.

It is an arithmetic number, because the mean of its divisors is an integer number (39069548).

Almost surely, 2^400415632 is an apocalyptic number.

It is an amenable number.

400415632 is a deficient number, since it is larger than the sum of its proper divisors (380975328).

400415632 is a wasteful number, since it uses less digits than its factorization.

400415632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180190 (or 180184 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 400415632 is about 20010.3881021833. The cubic root of 400415632 is about 737.0614116179.

Adding to 400415632 its reverse (236514004), we get a palindrome (636929636).

The spelling of 400415632 in words is "four hundred million, four hundred fifteen thousand, six hundred thirty-two".