22639928720 has 80 divisors (see below), whose sum is σ = 53066603520. Its totient is φ = 8982461952.

The previous prime is 22639928683. The next prime is 22639928737. The reversal of 22639928720 is 2782993622.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6738401 + ... + 6741759.

It is an arithmetic number, because the mean of its divisors is an integer number (663332544).

Almost surely, 2^22639928720 is an apocalyptic number.

22639928720 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 22639928720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26533301760).

22639928720 is an abundant number, since it is smaller than the sum of its proper divisors (30426674800).

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

22639928720 is a wasteful number, since it uses less digits than its factorization.

22639928720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 22639928720 in words is "twenty-two billion, six hundred thirty-nine million, nine hundred twenty-eight thousand, seven hundred twenty".