631572732 has 72 divisors (see below), whose sum is σ = 1903888896. Its totient is φ = 172602144.

The previous prime is 631572727. The next prime is 631572737. The reversal of 631572732 is 237275136.

It is an interprime number because it is at equal distance from previous prime (631572727) and next prime (631572737).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631572737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48688 + ... + 60279.

Almost surely, 2^631572732 is an apocalyptic number.

It is an amenable number.

631572732 is an abundant number, since it is smaller than the sum of its proper divisors (1272316164).

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

631572732 is a wasteful number, since it uses less digits than its factorization.

631572732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109007 (or 109002 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 631572732 is about 25131.1108389582. The cubic root of 631572732 is about 857.9746516384.

It can be divided in two parts, 63 and 1572732, that multiplied together give a square (99082116 = 9954²).

The spelling of 631572732 in words is "six hundred thirty-one million, five hundred seventy-two thousand, seven hundred thirty-two".