22499900 has 36 divisors (see below), whose sum is σ = 49528080. Its totient is φ = 8870400.

The previous prime is 22499863. The next prime is 22499903. The reversal of 22499900 is 999422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22499903) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5516 + ... + 8684.

It is an arithmetic number, because the mean of its divisors is an integer number (1375780).

Almost surely, 2^22499900 is an apocalyptic number.

22499900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22499900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24764040).

22499900 is an abundant number, since it is smaller than the sum of its proper divisors (27028180).

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

22499900 is a wasteful number, since it uses less digits than its factorization.

22499900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 22499900 is about 4743.4059493153. The cubic root of 22499900 is about 282.3103904255.

The spelling of 22499900 in words is "twenty-two million, four hundred ninety-nine thousand, nine hundred".