400071372 has 24 divisors (see below), whose sum is σ = 982632000. Its totient is φ = 126338256.

The previous prime is 400071349. The next prime is 400071457. The reversal of 400071372 is 273170004.

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, 877122 + ... + 877577.

It is an arithmetic number, because the mean of its divisors is an integer number (40943000).

Almost surely, 2^400071372 is an apocalyptic number.

It is an amenable number.

400071372 is an abundant number, since it is smaller than the sum of its proper divisors (582560628).

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

400071372 is a wasteful number, since it uses less digits than its factorization.

400071372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754725 (or 1754723 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 400071372 is about 20001.7842204139. The cubic root of 400071372 is about 736.8501199046.

The spelling of 400071372 in words is "four hundred million, seventy-one thousand, three hundred seventy-two".