72267538 has 8 divisors (see below), whose sum is σ = 123887232. Its totient is φ = 30971796.

The previous prime is 72267523. The next prime is 72267577. The reversal of 72267538 is 83576227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72267538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2580970 + ... + 2580997.

It is an arithmetic number, because the mean of its divisors is an integer number (15485904).

Almost surely, 2^72267538 is an apocalyptic number.

72267538 is a deficient number, since it is larger than the sum of its proper divisors (51619694).

72267538 is a wasteful number, since it uses less digits than its factorization.

72267538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161976.

The product of its digits is 141120, while the sum is 40.

The square root of 72267538 is about 8501.0315844608. The cubic root of 72267538 is about 416.5314068340.

The spelling of 72267538 in words is "seventy-two million, two hundred sixty-seven thousand, five hundred thirty-eight".