22104609728 has 28 divisors (see below), whose sum is σ = 46172460360. Its totient is φ = 10470604032.

The previous prime is 22104609721. The next prime is 22104609733. The reversal of 22104609728 is 82790640122.

It is a super-2 number, since 2×22104609728² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22104609721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9087851 + ... + 9090282.

Almost surely, 2^22104609728 is an apocalyptic number.

It is an amenable number.

22104609728 is an abundant number, since it is smaller than the sum of its proper divisors (24067850632).

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

22104609728 is a wasteful number, since it uses less digits than its factorization.

22104609728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18178164 (or 18178154 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 22104609728 in words is "twenty-two billion, one hundred four million, six hundred nine thousand, seven hundred twenty-eight".