401537232 has 30 divisors (see below), whose sum is σ = 1123746962. Its totient is φ = 133845696.

The previous prime is 401537221. The next prime is 401537249. The reversal of 401537232 is 232735104.

It can be written as a sum of positive squares in only one way, i.e., 333573696 + 67963536 = 18264^2 + 8244^2 .

It is a super-2 number, since 2×401537232² = 322464297364443648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401537196 and 401537205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1394083 + ... + 1394370.

Almost surely, 2^401537232 is an apocalyptic number.

It is an amenable number.

401537232 is an abundant number, since it is smaller than the sum of its proper divisors (722209730).

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

401537232 is a wasteful number, since it uses less digits than its factorization.

401537232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788467 (or 2788458 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 401537232 is about 20038.3939476197. The cubic root of 401537232 is about 737.7489617004.

The spelling of 401537232 in words is "four hundred one million, five hundred thirty-seven thousand, two hundred thirty-two".