400888272 has 20 divisors (see below), whose sum is σ = 1035628160. Its totient is φ = 133629408.

The previous prime is 400888261. The next prime is 400888309. The reversal of 400888272 is 272888004.

It is a super-2 number, since 2×400888272² = 321422813254291968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400888272.

It is a congruent number.

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, 4175872 + ... + 4175967.

It is an arithmetic number, because the mean of its divisors is an integer number (51781408).

Almost surely, 2^400888272 is an apocalyptic number.

It is an amenable number.

400888272 is an abundant number, since it is smaller than the sum of its proper divisors (634739888).

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

400888272 is a wasteful number, since it uses less digits than its factorization.

400888272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351850 (or 8351844 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 400888272 is about 20022.1944851208. The cubic root of 400888272 is about 737.3513001743.

The spelling of 400888272 in words is "four hundred million, eight hundred eighty-eight thousand, two hundred seventy-two".