22728922220 has 24 divisors (see below), whose sum is σ = 47742609600. Its totient is φ = 9089307392.

The previous prime is 22728922219. The next prime is 22728922243. The reversal of 22728922220 is 2222982722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57725 + ... + 220884.

It is an arithmetic number, because the mean of its divisors is an integer number (1989275400).

Almost surely, 2^22728922220 is an apocalyptic number.

22728922220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22728922220 is an abundant number, since it is smaller than the sum of its proper divisors (25013687380).

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

22728922220 is a wasteful number, since it uses less digits than its factorization.

22728922220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282697 (or 282695 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 22728922220 in words is "twenty-two billion, seven hundred twenty-eight million, nine hundred twenty-two thousand, two hundred twenty".