401637432 has 32 divisors (see below), whose sum is σ = 1147536000. Its totient is φ = 114753504.

The previous prime is 401637421. The next prime is 401637433. The reversal of 401637432 is 234736104.

It is a super-2 number, since 2×401637432² = 322625253567109248, 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 401637432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401637433) 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, 1195182 + ... + 1195517.

It is an arithmetic number, because the mean of its divisors is an integer number (35860500).

Almost surely, 2^401637432 is an apocalyptic number.

401637432 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

401637432 is an abundant number, since it is smaller than the sum of its proper divisors (745898568).

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

401637432 is a wasteful number, since it uses less digits than its factorization.

401637432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390715 (or 2390711 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 401637432 is about 20040.8939920354. The cubic root of 401637432 is about 737.8103227997.

The spelling of 401637432 in words is "four hundred one million, six hundred thirty-seven thousand, four hundred thirty-two".