19928539200 has 168 divisors, whose sum is σ = 66903425248. Its totient is φ = 5190635520.

The previous prime is 19928539181. The next prime is 19928539217. The reversal of 19928539200 is 293582991.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 19928539200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158124 + ... + 254676.

Almost surely, 2^19928539200 is an apocalyptic number.

19928539200 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 19928539200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33451712624).

19928539200 is an abundant number, since it is smaller than the sum of its proper divisors (46974886048).

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

19928539200 is a wasteful number, since it uses less digits than its factorization.

19928539200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96621 (or 96606 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 19928539200 in words is "nineteen billion, nine hundred twenty-eight million, five hundred thirty-nine thousand, two hundred".