72197322 has 16 divisors (see below), whose sum is σ = 150672960. Its totient is φ = 23019392.

The previous prime is 72197309. The next prime is 72197329. The reversal of 72197322 is 22379127.

It is not an unprimeable number, because it can be changed into a prime (72197329) 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, 261447 + ... + 261722.

It is an arithmetic number, because the mean of its divisors is an integer number (9417060).

Almost surely, 2^72197322 is an apocalyptic number.

72197322 is an abundant number, since it is smaller than the sum of its proper divisors (78475638).

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

72197322 is a wasteful number, since it uses less digits than its factorization.

72197322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523197.

The product of its digits is 10584, while the sum is 33.

The square root of 72197322 is about 8496.9007290894. The cubic root of 72197322 is about 416.3964608288.

It can be divided in two parts, 7219 and 7322, that added together give a palindrome (14541).

The spelling of 72197322 in words is "seventy-two million, one hundred ninety-seven thousand, three hundred twenty-two".