72272868 has 12 divisors (see below), whose sum is σ = 168636720. Its totient is φ = 24090952.

The previous prime is 72272839. The next prime is 72272881. The reversal of 72272868 is 86827227.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3011358 + ... + 3011381.

It is an arithmetic number, because the mean of its divisors is an integer number (14053060).

Almost surely, 2^72272868 is an apocalyptic number.

It is an amenable number.

72272868 is an abundant number, since it is smaller than the sum of its proper divisors (96363852).

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

72272868 is a wasteful number, since it uses less digits than its factorization.

72272868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022746 (or 6022744 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 72272868 is about 8501.3450700463. The cubic root of 72272868 is about 416.5416468296.

The spelling of 72272868 in words is "seventy-two million, two hundred seventy-two thousand, eight hundred sixty-eight".