72751928 has 8 divisors (see below), whose sum is σ = 136409880. Its totient is φ = 36375960.

The previous prime is 72751871. The next prime is 72751933. The reversal of 72751928 is 82915727.

It is a tau number, because it is divible by the number of its divisors (8).

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, 4546988 + ... + 4547003.

It is an arithmetic number, because the mean of its divisors is an integer number (17051235).

Almost surely, 2^72751928 is an apocalyptic number.

It is an amenable number.

72751928 is a deficient number, since it is larger than the sum of its proper divisors (63657952).

72751928 is a wasteful number, since it uses less digits than its factorization.

72751928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093997 (or 9093993 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 72751928 is about 8529.4740752288. The cubic root of 72751928 is about 417.4599681937.

The spelling of 72751928 in words is "seventy-two million, seven hundred fifty-one thousand, nine hundred twenty-eight".