72272488 has 16 divisors (see below), whose sum is σ = 135730080. Its totient is φ = 36077808.

The previous prime is 72272479. The next prime is 72272489. The reversal of 72272488 is 88427227.

It is a self number, because there is not a number n which added to its sum of digits gives 72272488.

It is not an unprimeable number, because it can be changed into a prime (72272489) 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, 1806 + ... + 12157.

It is an arithmetic number, because the mean of its divisors is an integer number (8483130).

Almost surely, 2^72272488 is an apocalyptic number.

It is an amenable number.

72272488 is a deficient number, since it is larger than the sum of its proper divisors (63457592).

72272488 is a wasteful number, since it uses less digits than its factorization.

72272488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14616 (or 14612 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 72272488 is about 8501.3227206124. The cubic root of 72272488 is about 416.5409167903.

The spelling of 72272488 in words is "seventy-two million, two hundred seventy-two thousand, four hundred eighty-eight".