72547512 has 16 divisors (see below), whose sum is σ = 181368840. Its totient is φ = 24182496.

The previous prime is 72547511. The next prime is 72547547. The reversal of 72547512 is 21574527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72547511) 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, 1511383 + ... + 1511430.

Almost surely, 2^72547512 is an apocalyptic number.

It is an amenable number.

72547512 is an abundant number, since it is smaller than the sum of its proper divisors (108821328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72547512 is a wasteful number, since it uses less digits than its factorization.

72547512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022822 (or 3022818 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 72547512 is about 8517.4827267216. The cubic root of 72547512 is about 417.0686129471.

The spelling of 72547512 in words is "seventy-two million, five hundred forty-seven thousand, five hundred twelve".