72748988 has 12 divisors (see below), whose sum is σ = 137103960. Its totient is φ = 33576432.

The previous prime is 72748981. The next prime is 72749009. The reversal of 72748988 is 88984727.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72748981) 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, 699458 + ... + 699561.

It is an arithmetic number, because the mean of its divisors is an integer number (11425330).

Almost surely, 2^72748988 is an apocalyptic number.

It is an amenable number.

72748988 is a deficient number, since it is larger than the sum of its proper divisors (64354972).

72748988 is a wasteful number, since it uses less digits than its factorization.

72748988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399036 (or 1399034 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The square root of 72748988 is about 8529.3017299190. The cubic root of 72748988 is about 417.4543447512.

The spelling of 72748988 in words is "seventy-two million, seven hundred forty-eight thousand, nine hundred eighty-eight".