72457516 has 12 divisors (see below), whose sum is σ = 126967288. Its totient is φ = 36181152.

The previous prime is 72457499. The next prime is 72457529. The reversal of 72457516 is 61575427.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 8361 + ... + 14656.

Almost surely, 2^72457516 is an apocalyptic number.

It is an amenable number.

72457516 is a deficient number, since it is larger than the sum of its proper divisors (54509772).

72457516 is a wasteful number, since it uses less digits than its factorization.

72457516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23808 (or 23806 counting only the distinct ones).

The product of its digits is 58800, while the sum is 37.

The square root of 72457516 is about 8512.1980710038. The cubic root of 72457516 is about 416.8960821591.

The spelling of 72457516 in words is "seventy-two million, four hundred fifty-seven thousand, five hundred sixteen".