22440200 has 96 divisors (see below), whose sum is σ = 55744200. Its totient is φ = 8386560.

The previous prime is 22440179. The next prime is 22440239. The reversal of 22440200 is 204422.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 3587236 + 18852964 = 1894^2 + 4342^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307364 + ... + 307436.

Almost surely, 2^22440200 is an apocalyptic number.

22440200 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 22440200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27872100).

22440200 is an abundant number, since it is smaller than the sum of its proper divisors (33304000).

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

22440200 is a wasteful number, since it uses less digits than its factorization.

22440200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22440200 is about 4737.1088229003. The cubic root of 22440200 is about 282.0604802962.

Adding to 22440200 its reverse (204422), we get a palindrome (22644622).

The spelling of 22440200 in words is "twenty-two million, four hundred forty thousand, two hundred".