400272132 has 24 divisors (see below), whose sum is σ = 1005812416. Its totient is φ = 123160608.

The previous prime is 400272097. The next prime is 400272139. The reversal of 400272132 is 231272004.

It is a junction number, because it is equal to n+sod(n) for n = 400272099 and 400272108.

It is not an unprimeable number, because it can be changed into a prime (400272139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282768 + ... + 1283079.

Almost surely, 2^400272132 is an apocalyptic number.

It is an amenable number.

400272132 is an abundant number, since it is smaller than the sum of its proper divisors (605540284).

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

400272132 is a wasteful number, since it uses less digits than its factorization.

400272132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565867 (or 2565865 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 400272132 is about 20006.8021432712. The cubic root of 400272132 is about 736.9733523268.

The spelling of 400272132 in words is "four hundred million, two hundred seventy-two thousand, one hundred thirty-two".