19896504320 has 624 divisors, whose sum is σ = 63586274304. Its totient is φ = 5839257600.

The previous prime is 19896504311. The next prime is 19896504323. The reversal of 19896504320 is 2340569891.

It is not an unprimeable number, because it can be changed into a prime (19896504323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 537743342 + ... + 537743378.

Almost surely, 2^19896504320 is an apocalyptic number.

19896504320 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 19896504320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31793137152).

19896504320 is an abundant number, since it is smaller than the sum of its proper divisors (43689769984).

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

19896504320 is a wasteful number, since it uses less digits than its factorization.

19896504320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 19896504320 in words is "nineteen billion, eight hundred ninety-six million, five hundred four thousand, three hundred twenty".