72772812 has 72 divisors (see below), whose sum is σ = 221312000. Its totient is φ = 19696608.

The previous prime is 72772807. The next prime is 72772849. The reversal of 72772812 is 21827727.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a plaindrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2812 + ... + 12387.

Almost surely, 2^72772812 is an apocalyptic number.

It is an amenable number.

72772812 is an abundant number, since it is smaller than the sum of its proper divisors (148539188).

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

72772812 is a wasteful number, since it uses less digits than its factorization.

72772812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235 (or 15230 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 72772812 is about 8530.6982129249. The cubic root of 72772812 is about 417.4999094027.

The spelling of 72772812 in words is "seventy-two million, seven hundred seventy-two thousand, eight hundred twelve".