72228588 has 24 divisors (see below), whose sum is σ = 173089392. Its totient is φ = 23425344.

The previous prime is 72228587. The next prime is 72228599. The reversal of 72228588 is 88582227.

It is not an unprimeable number, because it can be changed into a prime (72228587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80895 + ... + 81782.

It is an arithmetic number, because the mean of its divisors is an integer number (7212058).

Almost surely, 2^72228588 is an apocalyptic number.

It is an amenable number.

72228588 is an abundant number, since it is smaller than the sum of its proper divisors (100860804).

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

72228588 is a wasteful number, since it uses less digits than its factorization.

72228588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162721 (or 162719 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The square root of 72228588 is about 8498.7403772559. The cubic root of 72228588 is about 416.4565608089.

The spelling of 72228588 in words is "seventy-two million, two hundred twenty-eight thousand, five hundred eighty-eight".