22780989280 has 96 divisors (see below), whose sum is σ = 61567490880. Its totient is φ = 7803156480.

The previous prime is 22780989277. The next prime is 22780989323. The reversal of 22780989280 is 8298908722.

It is a congruent number.

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, 1232910 + ... + 1251250.

It is an arithmetic number, because the mean of its divisors is an integer number (641328030).

Almost surely, 2^22780989280 is an apocalyptic number.

22780989280 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 22780989280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30783745440).

22780989280 is an abundant number, since it is smaller than the sum of its proper divisors (38786501600).

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

22780989280 is a wasteful number, since it uses less digits than its factorization.

22780989280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19472 (or 19464 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 22780989280 in words is "twenty-two billion, seven hundred eighty million, nine hundred eighty-nine thousand, two hundred eighty".