19800302256 has 100 divisors (see below), whose sum is σ = 65494680592. Its totient is φ = 5657226624.

The previous prime is 19800302243. The next prime is 19800302257. The reversal of 19800302256 is 65220300891.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19800302256.

It is not an unprimeable number, because it can be changed into a prime (19800302257) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1082215 + ... + 1100358.

Almost surely, 2^19800302256 is an apocalyptic number.

19800302256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19800302256 is an abundant number, since it is smaller than the sum of its proper divisors (45694378336).

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

19800302256 is a wasteful number, since it uses less digits than its factorization.

19800302256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182600 (or 2182585 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 19800302256 in words is "nineteen billion, eight hundred million, three hundred two thousand, two hundred fifty-six".