72887632 has 20 divisors (see below), whose sum is σ = 145037716. Its totient is φ = 35458560.

The previous prime is 72887593. The next prime is 72887663. The reversal of 72887632 is 23678827.

It can be written as a sum of positive squares in 2 ways, for example, as 64384576 + 8503056 = 8024^2 + 2916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60969 + ... + 62152.

Almost surely, 2^72887632 is an apocalyptic number.

It is an amenable number.

72887632 is a deficient number, since it is larger than the sum of its proper divisors (72150084).

72887632 is a wasteful number, since it uses less digits than its factorization.

72887632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123166 (or 123160 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 72887632 is about 8537.4253730267. The cubic root of 72887632 is about 417.7193693389.

The spelling of 72887632 in words is "seventy-two million, eight hundred eighty-seven thousand, six hundred thirty-two".