22099968 has 144 divisors (see below), whose sum is σ = 70270200. Its totient is φ = 6635520.

The previous prime is 22099967. The next prime is 22099997. The reversal of 22099968 is 86999022.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22099967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202698 + ... + 202806.

Almost surely, 2^22099968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22099968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35135100).

22099968 is an abundant number, since it is smaller than the sum of its proper divisors (48170232).

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

22099968 is a wasteful number, since it uses less digits than its factorization.

22099968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 22099968 is about 4701.0603059310. The cubic root of 22099968 is about 280.6277073927.

The spelling of 22099968 in words is "twenty-two million, ninety-nine thousand, nine hundred sixty-eight".