22099856 has 20 divisors (see below), whose sum is σ = 44295900. Its totient is φ = 10668672.

The previous prime is 22099853. The next prime is 22099897. The reversal of 22099856 is 65899022.

It can be written as a sum of positive squares in 2 ways, for example, as 9709456 + 12390400 = 3116^2 + 3520^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22099853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23351 + ... + 24278.

It is an arithmetic number, because the mean of its divisors is an integer number (2214795).

Almost surely, 2^22099856 is an apocalyptic number.

It is an amenable number.

22099856 is an abundant number, since it is smaller than the sum of its proper divisors (22196044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22099856 is a wasteful number, since it uses less digits than its factorization.

22099856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47666 (or 47660 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 22099856 is about 4701.0483937096. The cubic root of 22099856 is about 280.6272333293.

The spelling of 22099856 in words is "twenty-two million, ninety-nine thousand, eight hundred fifty-six".