72436624 has 20 divisors (see below), whose sum is σ = 151142236. Its totient is φ = 33432192.

The previous prime is 72436619. The next prime is 72436631. The reversal of 72436624 is 42663427.

It can be written as a sum of positive squares in 2 ways, for example, as 13454224 + 58982400 = 3668^2 + 7680^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72436624.

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, 173919 + ... + 174334.

Almost surely, 2^72436624 is an apocalyptic number.

It is an amenable number.

72436624 is an abundant number, since it is smaller than the sum of its proper divisors (78705612).

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

72436624 is a wasteful number, since it uses less digits than its factorization.

72436624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348274 (or 348268 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 72436624 is about 8510.9708024408. The cubic root of 72436624 is about 416.8560098028.

The spelling of 72436624 in words is "seventy-two million, four hundred thirty-six thousand, six hundred twenty-four".