72510544 has 20 divisors (see below), whose sum is σ = 140737396. Its totient is φ = 36191232.

The previous prime is 72510539. The next prime is 72510553. The reversal of 72510544 is 44501527.

It can be written as a sum of positive squares in 2 ways, for example, as 3952144 + 68558400 = 1988^2 + 8280^2 .

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, 6112 + ... + 13504.

Almost surely, 2^72510544 is an apocalyptic number.

It is an amenable number.

72510544 is a deficient number, since it is larger than the sum of its proper divisors (68226852).

72510544 is a wasteful number, since it uses less digits than its factorization.

72510544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014 (or 8008 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 72510544 is about 8515.3123254523. The cubic root of 72510544 is about 416.9977590948.

The spelling of 72510544 in words is "seventy-two million, five hundred ten thousand, five hundred forty-four".