19803136 has 44 divisors (see below), whose sum is σ = 40235832. Its totient is φ = 9740288.

The previous prime is 19803127. The next prime is 19803163. The reversal of 19803136 is 63130891.

It is a junction number, because it is equal to n+sod(n) for n = 19803098 and 19803107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84876 + ... + 85108.

Almost surely, 2^19803136 is an apocalyptic number.

19803136 is a gapful number since it is divisible by the number (16) 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 19803136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20117916).

19803136 is an abundant number, since it is smaller than the sum of its proper divisors (20432696).

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

19803136 is an equidigital number, since it uses as much as digits as its factorization.

19803136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 19803136 is about 4450.0714601004. The cubic root of 19803136 is about 270.5482048792.

The spelling of 19803136 in words is "nineteen million, eight hundred three thousand, one hundred thirty-six".