19883424240 has 160 divisors (see below), whose sum is σ = 68709888000. Its totient is φ = 5285018880.

The previous prime is 19883424233. The next prime is 19883424241. The reversal of 19883424240 is 4242438891.

19883424240 is a `hidden beast` number, since 198 + 8 + 34 + 2 + 424 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19883424241) 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, 656961 + ... + 686559.

It is an arithmetic number, because the mean of its divisors is an integer number (429436800).

Almost surely, 2^19883424240 is an apocalyptic number.

19883424240 is a gapful number since it is divisible by the number (10) 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 19883424240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34354944000).

19883424240 is an abundant number, since it is smaller than the sum of its proper divisors (48826463760).

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

19883424240 is a wasteful number, since it uses less digits than its factorization.

19883424240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29932 (or 29920 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 19883424240 in words is "nineteen billion, eight hundred eighty-three million, four hundred twenty-four thousand, two hundred forty".