22272371 has 16 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 19766880.

The previous prime is 22272361. The next prime is 22272379. The reversal of 22272371 is 17327222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22272371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22272371.

It is not an unprimeable number, because it can be changed into a prime (22272379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149405 + ... + 149553.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^22272371 is an apocalyptic number.

22272371 is a deficient number, since it is larger than the sum of its proper divisors (2610829).

22272371 is a wasteful number, since it uses less digits than its factorization.

22272371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394.

The product of its digits is 2352, while the sum is 26.

The square root of 22272371 is about 4719.3612915309. The cubic root of 22272371 is about 281.3555484668.

Adding to 22272371 its reverse (17327222), we get a palindrome (39599593).

The spelling of 22272371 in words is "twenty-two million, two hundred seventy-two thousand, three hundred seventy-one".