22279272 has 32 divisors (see below), whose sum is σ = 58121280. Its totient is φ = 7103360.

The previous prime is 22279247. The next prime is 22279319. The reversal of 22279272 is 27297222.

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 7 ways as a sum of consecutive naturals, for example, 19629 + ... + 20732.

It is an arithmetic number, because the mean of its divisors is an integer number (1816290).

Almost surely, 2^22279272 is an apocalyptic number.

It is an amenable number.

22279272 is an abundant number, since it is smaller than the sum of its proper divisors (35842008).

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

22279272 is a wasteful number, since it uses less digits than its factorization.

22279272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40393 (or 40389 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 22279272 is about 4720.0923719775. The cubic root of 22279272 is about 281.3846044084.

The spelling of 22279272 in words is "twenty-two million, two hundred seventy-nine thousand, two hundred seventy-two".