72239272 has 32 divisors (see below), whose sum is σ = 155675520. Its totient is φ = 30784320.

The previous prime is 72239257. The next prime is 72239287. The reversal of 72239272 is 27293227.

It is an interprime number because it is at equal distance from previous prime (72239257) and next prime (72239287).

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, 6573 + ... + 13699.

It is an arithmetic number, because the mean of its divisors is an integer number (4864860).

Almost surely, 2^72239272 is an apocalyptic number.

It is an amenable number.

72239272 is an abundant number, since it is smaller than the sum of its proper divisors (83436248).

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

72239272 is a wasteful number, since it uses less digits than its factorization.

72239272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321 (or 7317 counting only the distinct ones).

The product of its digits is 21168, while the sum is 34.

The square root of 72239272 is about 8499.3689177491. The cubic root of 72239272 is about 416.4770937799.

The spelling of 72239272 in words is "seventy-two million, two hundred thirty-nine thousand, two hundred seventy-two".