19221930240 has 144 divisors (see below), whose sum is σ = 61660939200. Its totient is φ = 5103230976.

The previous prime is 19221930197. The next prime is 19221930253. The reversal of 19221930240 is 4203912291.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868431 + ... + 890289.

Almost surely, 2^19221930240 is an apocalyptic number.

19221930240 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 19221930240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30830469600).

19221930240 is an abundant number, since it is smaller than the sum of its proper divisors (42439008960).

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

19221930240 is a wasteful number, since it uses less digits than its factorization.

19221930240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22112 (or 22098 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 19221930240 in words is "nineteen billion, two hundred twenty-one million, nine hundred thirty thousand, two hundred forty".