400520932 has 24 divisors (see below), whose sum is σ = 805078400. Its totient is φ = 170786880.

The previous prime is 400520921. The next prime is 400520977. The reversal of 400520932 is 239025004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400520897 and 400520906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30369 + ... + 41512.

Almost surely, 2^400520932 is an apocalyptic number.

It is an amenable number.

400520932 is an abundant number, since it is smaller than the sum of its proper divisors (404557468).

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

400520932 is a wasteful number, since it uses less digits than its factorization.

400520932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72091 (or 72089 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 400520932 is about 20013.0190626002. The cubic root of 400520932 is about 737.1260159590.

Adding to 400520932 its reverse (239025004), we get a palindrome (639545936).

The spelling of 400520932 in words is "four hundred million, five hundred twenty thousand, nine hundred thirty-two".