72928936 has 16 divisors (see below), whose sum is σ = 137741940. Its totient is φ = 36197760.

The previous prime is 72928931. The next prime is 72928967. The reversal of 72928936 is 63982927.

It can be written as a sum of positive squares in 2 ways, for example, as 68062500 + 4866436 = 8250^2 + 2206^2 .

It is not an unprimeable number, because it can be changed into a prime (72928931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32175 + ... + 34366.

Almost surely, 2^72928936 is an apocalyptic number.

It is an amenable number.

72928936 is a deficient number, since it is larger than the sum of its proper divisors (64813004).

72928936 is a wasteful number, since it uses less digits than its factorization.

72928936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66684 (or 66680 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 72928936 is about 8539.8440266787. The cubic root of 72928936 is about 417.7982589133.

The spelling of 72928936 in words is "seventy-two million, nine hundred twenty-eight thousand, nine hundred thirty-six".