22279912 has 32 divisors (see below), whose sum is σ = 42815520. Its totient is φ = 10866240.

The previous prime is 22279909. The next prime is 22279919. The reversal of 22279912 is 21997222.

It is not an unprimeable number, because it can be changed into a prime (22279919) 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, 105487 + ... + 105697.

It is an arithmetic number, because the mean of its divisors is an integer number (1337985).

Almost surely, 2^22279912 is an apocalyptic number.

It is an amenable number.

22279912 is a deficient number, since it is larger than the sum of its proper divisors (20535608).

22279912 is a wasteful number, since it uses less digits than its factorization.

22279912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 477 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 22279912 is about 4720.1601667740. The cubic root of 22279912 is about 281.3872987577.

The spelling of 22279912 in words is "twenty-two million, two hundred seventy-nine thousand, nine hundred twelve".