22890323520 has 224 divisors, whose sum is σ = 82471564800. Its totient is φ = 5974106112.

The previous prime is 22890323497. The next prime is 22890323539. The reversal of 22890323520 is 2532309822.

22890323520 is a `hidden beast` number, since 2 + 28 + 90 + 3 + 23 + 520 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377896 + ... + 434264.

Almost surely, 2^22890323520 is an apocalyptic number.

22890323520 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 22890323520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41235782400).

22890323520 is an abundant number, since it is smaller than the sum of its proper divisors (59581241280).

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

22890323520 is a wasteful number, since it uses less digits than its factorization.

22890323520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56442 (or 56426 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 22890323520 in words is "twenty-two billion, eight hundred ninety million, three hundred twenty-three thousand, five hundred twenty".