72975712 has 24 divisors (see below), whose sum is σ = 145020456. Its totient is φ = 36145152.

The previous prime is 72975701. The next prime is 72975769. The reversal of 72975712 is 21757927.

It is a happy number.

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, 7233 + ... + 14080.

It is an arithmetic number, because the mean of its divisors is an integer number (6042519).

Almost surely, 2^72975712 is an apocalyptic number.

It is an amenable number.

72975712 is a deficient number, since it is larger than the sum of its proper divisors (72044744).

72975712 is a wasteful number, since it uses less digits than its factorization.

72975712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21430 (or 21422 counting only the distinct ones).

The product of its digits is 61740, while the sum is 40.

The square root of 72975712 is about 8542.5822793813. The cubic root of 72975712 is about 417.8875639075.

The spelling of 72975712 in words is "seventy-two million, nine hundred seventy-five thousand, seven hundred twelve".