72723968 has 20 divisors (see below), whose sum is σ = 145306920. Its totient is φ = 36361728.

The previous prime is 72723949. The next prime is 72723979. The reversal of 72723968 is 86932727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70508 + ... + 71531.

It is an arithmetic number, because the mean of its divisors is an integer number (7265346).

Almost surely, 2^72723968 is an apocalyptic number.

It is an amenable number.

72723968 is a deficient number, since it is larger than the sum of its proper divisors (72582952).

72723968 is an equidigital number, since it uses as much as digits as its factorization.

72723968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142057 (or 142041 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 72723968 is about 8527.8348952123. The cubic root of 72723968 is about 417.4064819763.

The spelling of 72723968 in words is "seventy-two million, seven hundred twenty-three thousand, nine hundred sixty-eight".