22199424 has 64 divisors (see below), whose sum is σ = 63517440. Its totient is φ = 6829056.

The previous prime is 22199407. The next prime is 22199431. The reversal of 22199424 is 42499122.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2769 + ... + 7215.

It is an arithmetic number, because the mean of its divisors is an integer number (992460).

Almost surely, 2^22199424 is an apocalyptic number.

22199424 is a gapful number since it is divisible by the number (24) 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 22199424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31758720).

22199424 is an abundant number, since it is smaller than the sum of its proper divisors (41318016).

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

22199424 is a wasteful number, since it uses less digits than its factorization.

22199424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4477 (or 4465 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 22199424 is about 4711.6264707636. The cubic root of 22199424 is about 281.0480450432.

The spelling of 22199424 in words is "twenty-two million, one hundred ninety-nine thousand, four hundred twenty-four".