400872132 has 24 divisors (see below), whose sum is σ = 1039298400. Its totient is φ = 133624008.

The previous prime is 400872119. The next prime is 400872161. The reversal of 400872132 is 231278004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 400872096 and 400872105.

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, 1855782 + ... + 1855997.

It is an arithmetic number, because the mean of its divisors is an integer number (43304100).

Almost surely, 2^400872132 is an apocalyptic number.

It is an amenable number.

400872132 is an abundant number, since it is smaller than the sum of its proper divisors (638426268).

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

400872132 is a wasteful number, since it uses less digits than its factorization.

400872132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711792 (or 3711784 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 400872132 is about 20021.7914283413. The cubic root of 400872132 is about 737.3414046410.

The spelling of 400872132 in words is "four hundred million, eight hundred seventy-two thousand, one hundred thirty-two".