22229972 has 12 divisors (see below), whose sum is σ = 38964660. Its totient is φ = 11097216.

The previous prime is 22229971. The next prime is 22229993. The reversal of 22229972 is 27992222.

It can be written as a sum of positive squares in 2 ways, for example, as 13205956 + 9024016 = 3634^2 + 3004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22229971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1397 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (3247055).

Almost surely, 2^22229972 is an apocalyptic number.

It is an amenable number.

22229972 is a deficient number, since it is larger than the sum of its proper divisors (16734688).

22229972 is a wasteful number, since it uses less digits than its factorization.

22229972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890 (or 8888 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 22229972 is about 4714.8671243207. The cubic root of 22229972 is about 281.1769000474.

The spelling of 22229972 in words is "twenty-two million, two hundred twenty-nine thousand, nine hundred seventy-two".