400902272 has 32 divisors (see below), whose sum is σ = 810610320. Its totient is φ = 197455104.

The previous prime is 400902269. The next prime is 400902283. The reversal of 400902272 is 272209004.

It is a tau number, because it is divible by the number of its divisors (32).

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, 14798 + ... + 31949.

Almost surely, 2^400902272 is an apocalyptic number.

400902272 is the 10703-rd centered heptagonal number.

It is an amenable number.

400902272 is an abundant number, since it is smaller than the sum of its proper divisors (409708048).

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

400902272 is an equidigital number, since it uses as much as digits as its factorization.

400902272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46828 (or 46816 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 400902272 is about 20022.5440940955. The cubic root of 400902272 is about 737.3598834453.

The spelling of 400902272 in words is "four hundred million, nine hundred two thousand, two hundred seventy-two".