22000456520 has 32 divisors (see below), whose sum is σ = 56572603200. Its totient is φ = 7543013568.

The previous prime is 22000456453. The next prime is 22000456523. The reversal of 22000456520 is 2565400022.

It is a self number, because there is not a number n which added to its sum of digits gives 22000456520.

It is not an unprimeable number, because it can be changed into a prime (22000456523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39286250 + ... + 39286809.

It is an arithmetic number, because the mean of its divisors is an integer number (1767893850).

Almost surely, 2^22000456520 is an apocalyptic number.

22000456520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000456520 is an abundant number, since it is smaller than the sum of its proper divisors (34572146680).

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

22000456520 is a wasteful number, since it uses less digits than its factorization.

22000456520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78573077 (or 78573073 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 22000456520 its reverse (2565400022), we get a palindrome (24565856542).

The spelling of 22000456520 in words is "twenty-two billion, four hundred fifty-six thousand, five hundred twenty".