72316012 has 12 divisors (see below), whose sum is σ = 126856576. Its totient is φ = 36071280.

The previous prime is 72315983. The next prime is 72316037. The reversal of 72316012 is 21061327.

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, 19788 + ... + 23155.

Almost surely, 2^72316012 is an apocalyptic number.

It is an amenable number.

72316012 is a deficient number, since it is larger than the sum of its proper divisors (54540564).

72316012 is a wasteful number, since it uses less digits than its factorization.

72316012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43368 (or 43366 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72316012 is about 8503.8821722787. The cubic root of 72316012 is about 416.6245165540.

Adding to 72316012 its reverse (21061327), we get a palindrome (93377339).

The spelling of 72316012 in words is "seventy-two million, three hundred sixteen thousand, twelve".