22520412720 has 960 divisors, whose sum is σ = 94108262400. Its totient is φ = 4916920320.

The previous prime is 22520412689. The next prime is 22520412731. The reversal of 22520412720 is 2721402522.

22520412720 is a `hidden beast` number, since 225 + 2 + 0 + 412 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 117907825 + ... + 117908015.

It is an arithmetic number, because the mean of its divisors is an integer number (98029440).

Almost surely, 2^22520412720 is an apocalyptic number.

22520412720 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 22520412720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47054131200).

22520412720 is an abundant number, since it is smaller than the sum of its proper divisors (71587849680).

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

22520412720 is a wasteful number, since it uses less digits than its factorization.

22520412720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The spelling of 22520412720 in words is "twenty-two billion, five hundred twenty million, four hundred twelve thousand, seven hundred twenty".