72756012 has 48 divisors (see below), whose sum is σ = 200712960. Its totient is φ = 20069952.

The previous prime is 72756001. The next prime is 72756031. The reversal of 72756012 is 21065727.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12498 + ... + 17369.

It is an arithmetic number, because the mean of its divisors is an integer number (4181520).

Almost surely, 2^72756012 is an apocalyptic number.

It is an amenable number.

72756012 is an abundant number, since it is smaller than the sum of its proper divisors (127956948).

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

72756012 is a wasteful number, since it uses less digits than its factorization.

72756012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29910 (or 29908 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 72756012 is about 8529.7134770167. The cubic root of 72756012 is about 417.4677795542.

The spelling of 72756012 in words is "seventy-two million, seven hundred fifty-six thousand, twelve".