22999860520 has 128 divisors (see below), whose sum is σ = 64120896000. Its totient is φ = 7230053376.

The previous prime is 22999860509. The next prime is 22999860529. The reversal of 22999860520 is 2506899922.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (22999860529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521157 + ... + 563563.

It is an arithmetic number, because the mean of its divisors is an integer number (500944500).

Almost surely, 2^22999860520 is an apocalyptic number.

22999860520 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 22999860520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32060448000).

22999860520 is an abundant number, since it is smaller than the sum of its proper divisors (41121035480).

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

22999860520 is a wasteful number, since it uses less digits than its factorization.

22999860520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42587 (or 42583 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 22999860520 in words is "twenty-two billion, nine hundred ninety-nine million, eight hundred sixty thousand, five hundred twenty".