22499812 has 6 divisors (see below), whose sum is σ = 39374678. Its totient is φ = 11249904.

The previous prime is 22499809. The next prime is 22499821. The reversal of 22499812 is 21899422.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 2643876 = 4456^2 + 1626^2 .

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 as a sum of consecutive naturals, namely, 2812473 + ... + 2812480.

Almost surely, 2^22499812 is an apocalyptic number.

It is an amenable number.

22499812 is a deficient number, since it is larger than the sum of its proper divisors (16874866).

22499812 is a wasteful number, since it uses less digits than its factorization.

22499812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5624957 (or 5624955 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 22499812 is about 4743.3966732712. The cubic root of 22499812 is about 282.3100223742.

The spelling of 22499812 in words is "twenty-two million, four hundred ninety-nine thousand, eight hundred twelve".