22997812 has 12 divisors (see below), whose sum is σ = 41634180. Its totient is φ = 11102336.

The previous prime is 22997803. The next prime is 22997851. The reversal of 22997812 is 21879922.

It can be written as a sum of positive squares in 2 ways, for example, as 11464996 + 11532816 = 3386^2 + 3396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99013 + ... + 99244.

It is an arithmetic number, because the mean of its divisors is an integer number (3469515).

Almost surely, 2^22997812 is an apocalyptic number.

It is an amenable number.

22997812 is a deficient number, since it is larger than the sum of its proper divisors (18636368).

22997812 is a wasteful number, since it uses less digits than its factorization.

22997812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198290 (or 198288 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 22997812 is about 4795.6034031183. The cubic root of 22997812 is about 284.3776797558.

The spelling of 22997812 in words is "twenty-two million, nine hundred ninety-seven thousand, eight hundred twelve".