19924734024 has 256 divisors, whose sum is σ = 61308576000. Its totient is φ = 5957867520.

The previous prime is 19924734023. The next prime is 19924734061. The reversal of 19924734024 is 42043742991.

It is a Cunningham number, because it is equal to 141155²-1.

It is not an unprimeable number, because it can be changed into a prime (19924734023) 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, 15243979 + ... + 15245285.

It is an arithmetic number, because the mean of its divisors is an integer number (239486625).

Almost surely, 2^19924734024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19924734024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30654288000).

19924734024 is an abundant number, since it is smaller than the sum of its proper divisors (41383841976).

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

19924734024 is a wasteful number, since it uses less digits than its factorization.

19924734024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 19924734024 in words is "nineteen billion, nine hundred twenty-four million, seven hundred thirty-four thousand, twenty-four".