22640204448 has 36 divisors (see below), whose sum is σ = 64383082218. Its totient is φ = 7546734720.

The previous prime is 22640204443. The next prime is 22640204467. The reversal of 22640204448 is 84440204622.

It is a happy number.

22640204448 is a `hidden beast` number, since 2 + 2 + 6 + 4 + 0 + 204 + 448 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18849093264 + 3791111184 = 137292^2 + 61572^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22640204443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39305623 + ... + 39306198.

Almost surely, 2^22640204448 is an apocalyptic number.

It is an amenable number.

22640204448 is an abundant number, since it is smaller than the sum of its proper divisors (41742877770).

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

22640204448 is a wasteful number, since it uses less digits than its factorization.

22640204448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78611837 (or 78611826 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

The spelling of 22640204448 in words is "twenty-two billion, six hundred forty million, two hundred four thousand, four hundred forty-eight".