72542288 has 40 divisors (see below), whose sum is σ = 172988928. Its totient is φ = 28697472.

The previous prime is 72542269. The next prime is 72542317. The reversal of 72542288 is 88224527.

It is a happy number.

It is a congruent 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, 23456 + ... + 26367.

Almost surely, 2^72542288 is an apocalyptic number.

It is an amenable number.

72542288 is an abundant number, since it is smaller than the sum of its proper divisors (100446640).

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

72542288 is a wasteful number, since it uses less digits than its factorization.

72542288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49851 (or 49845 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 72542288 is about 8517.1760578257. The cubic root of 72542288 is about 417.0586019503.

The spelling of 72542288 in words is "seventy-two million, five hundred forty-two thousand, two hundred eighty-eight".