401637472 has 24 divisors (see below), whose sum is σ = 817992000. Its totient is φ = 193893504.

The previous prime is 401637469. The next prime is 401637473. The reversal of 401637472 is 274736104.

It is a super-2 number, since 2×401637472² = 322625317829101568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401637473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215472 + ... + 217327.

It is an arithmetic number, because the mean of its divisors is an integer number (34083000).

Almost surely, 2^401637472 is an apocalyptic number.

It is an amenable number.

401637472 is an abundant number, since it is smaller than the sum of its proper divisors (416354528).

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

401637472 is a wasteful number, since it uses less digits than its factorization.

401637472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432838 (or 432830 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 401637472 is about 20040.8949899948. The cubic root of 401637472 is about 737.8103472931.

The spelling of 401637472 in words is "four hundred one million, six hundred thirty-seven thousand, four hundred seventy-two".