72112776 has 32 divisors (see below), whose sum is σ = 190887840. Its totient is φ = 22623488.

The previous prime is 72112723. The next prime is 72112811. The reversal of 72112776 is 67721127.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87966 + ... + 88781.

It is an arithmetic number, because the mean of its divisors is an integer number (5965245).

Almost surely, 2^72112776 is an apocalyptic number.

It is an amenable number.

72112776 is an abundant number, since it is smaller than the sum of its proper divisors (118775064).

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

72112776 is a wasteful number, since it uses less digits than its factorization.

72112776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176773 (or 176769 counting only the distinct ones).

The product of its digits is 8232, while the sum is 33.

The square root of 72112776 is about 8491.9241635804. The cubic root of 72112776 is about 416.2338582780.

The spelling of 72112776 in words is "seventy-two million, one hundred twelve thousand, seven hundred seventy-six".