72266572 has 36 divisors (see below), whose sum is σ = 147716184. Its totient is φ = 30844800.

The previous prime is 72266561. The next prime is 72266591. The reversal of 72266572 is 27566227.

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 11 ways as a sum of consecutive naturals, for example, 59572 + ... + 60772.

Almost surely, 2^72266572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72266572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73858092).

72266572 is an abundant number, since it is smaller than the sum of its proper divisors (75449612).

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

72266572 is a wasteful number, since it uses less digits than its factorization.

72266572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1517 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 72266572 is about 8500.9747676369. The cubic root of 72266572 is about 416.5295509010.

The spelling of 72266572 in words is "seventy-two million, two hundred sixty-six thousand, five hundred seventy-two".