72717324 has 12 divisors (see below), whose sum is σ = 169673784. Its totient is φ = 24239104.

The previous prime is 72717317. The next prime is 72717371. The reversal of 72717324 is 42371727.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3029877 + ... + 3029900.

It is an arithmetic number, because the mean of its divisors is an integer number (14139482).

Almost surely, 2^72717324 is an apocalyptic number.

It is an amenable number.

72717324 is an abundant number, since it is smaller than the sum of its proper divisors (96956460).

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

72717324 is a wasteful number, since it uses less digits than its factorization.

72717324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059784 (or 6059782 counting only the distinct ones).

The product of its digits is 16464, while the sum is 33.

The square root of 72717324 is about 8527.4453384352. The cubic root of 72717324 is about 417.3937702885.

The spelling of 72717324 in words is "seventy-two million, seven hundred seventeen thousand, three hundred twenty-four".