22449994 has 16 divisors (see below), whose sum is σ = 38782656. Its totient is φ = 9547200.

The previous prime is 22449961. The next prime is 22450003. The reversal of 22449994 is 49994422.

It is a self number, because there is not a number n which added to its sum of digits gives 22449994.

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, 4287 + ... + 7954.

It is an arithmetic number, because the mean of its divisors is an integer number (2423916).

Almost surely, 2^22449994 is an apocalyptic number.

22449994 is a deficient number, since it is larger than the sum of its proper divisors (16332662).

22449994 is a wasteful number, since it uses less digits than its factorization.

22449994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12381.

The product of its digits is 186624, while the sum is 43.

The square root of 22449994 is about 4738.1424630334. The cubic root of 22449994 is about 282.1015093207.

The spelling of 22449994 in words is "twenty-two million, four hundred forty-nine thousand, nine hundred ninety-four".