22036609800 has 72 divisors (see below), whose sum is σ = 74006287290. Its totient is φ = 5876428800.

The previous prime is 22036609783. The next prime is 22036609801. The reversal of 22036609800 is 890663022.

It can be written as a sum of positive squares in 3 ways, for example, as 16135604676 + 5901005124 = 127026^2 + 76818^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×22036609800² (a number of 21 digits) contains 22 as substring.

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 (22036609801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6119481 + ... + 6123080.

Almost surely, 2^22036609800 is an apocalyptic number.

22036609800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22036609800 is an abundant number, since it is smaller than the sum of its proper divisors (51969677490).

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

22036609800 is a wasteful number, since it uses less digits than its factorization.

22036609800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12242583 (or 12242571 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 22036609800 in words is "twenty-two billion, thirty-six million, six hundred nine thousand, eight hundred".