22439924640 has 384 divisors, whose sum is σ = 90481950720. Its totient is φ = 5087867904.

The previous prime is 22439924621. The next prime is 22439924653. The reversal of 22439924640 is 4642993422.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3837559 + ... + 3843401.

It is an arithmetic number, because the mean of its divisors is an integer number (235630080).

Almost surely, 2^22439924640 is an apocalyptic number.

22439924640 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 22439924640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45240975360).

22439924640 is an abundant number, since it is smaller than the sum of its proper divisors (68042026080).

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

22439924640 is a wasteful number, since it uses less digits than its factorization.

22439924640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001 (or 5987 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 22439924640 in words is "twenty-two billion, four hundred thirty-nine million, nine hundred twenty-four thousand, six hundred forty".