22381782720 has 112 divisors (see below), whose sum is σ = 77522393088. Its totient is φ = 5425884160.

The previous prime is 22381782713. The next prime is 22381782727. The reversal of 22381782720 is 2728718322.

It is an interprime number because it is at equal distance from previous prime (22381782713) and next prime (22381782727).

It is not an unprimeable number, because it can be changed into a prime (22381782727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049184 + ... + 1070303.

It is an arithmetic number, because the mean of its divisors is an integer number (692164224).

Almost surely, 2^22381782720 is an apocalyptic number.

22381782720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22381782720 is an abundant number, since it is smaller than the sum of its proper divisors (55140610368).

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

22381782720 is a wasteful number, since it uses less digits than its factorization.

22381782720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119518 (or 2119508 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 22381782720 in words is "twenty-two billion, three hundred eighty-one million, seven hundred eighty-two thousand, seven hundred twenty".