22056390720 has 784 divisors, whose sum is σ = 97012231680. Its totient is φ = 4649177088.

The previous prime is 22056390689. The next prime is 22056390721. The reversal of 22056390720 is 2709365022.

22056390720 is a `hidden beast` number, since 2 + 2 + 0 + 563 + 90 + 7 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22056390721) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 21227961 + ... + 21228999.

Almost surely, 2^22056390720 is an apocalyptic number.

22056390720 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 22056390720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48506115840).

22056390720 is an abundant number, since it is smaller than the sum of its proper divisors (74955840960).

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

22056390720 is a wasteful number, since it uses less digits than its factorization.

22056390720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 22056390720 in words is "twenty-two billion, fifty-six million, three hundred ninety thousand, seven hundred twenty".