22008390984 has 256 divisors, whose sum is σ = 64671264000. Its totient is φ = 6927482880.

The previous prime is 22008390983. The next prime is 22008390991. The reversal of 22008390984 is 48909380022.

It is a super-2 number, since 2×22008390984² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22008390983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38142504 + ... + 38143080.

It is an arithmetic number, because the mean of its divisors is an integer number (252622125).

Almost surely, 2^22008390984 is an apocalyptic number.

22008390984 is a gapful number since it is divisible by the number (24) 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 22008390984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32335632000).

22008390984 is an abundant number, since it is smaller than the sum of its proper divisors (42662873016).

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

22008390984 is a wasteful number, since it uses less digits than its factorization.

22008390984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 22008390984 in words is "twenty-two billion, eight million, three hundred ninety thousand, nine hundred eighty-four".