19983996 has 60 divisors (see below), whose sum is σ = 53686248. Its totient is φ = 6477408.

The previous prime is 19983989. The next prime is 19984001. The reversal of 19983996 is 69938991.

It is a super-2 number, since 2×19983996² = 798720192256032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11155 + ... + 12821.

Almost surely, 2^19983996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19983996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26843124).

19983996 is an abundant number, since it is smaller than the sum of its proper divisors (33702252).

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

19983996 is a wasteful number, since it uses less digits than its factorization.

19983996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1709 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 19983996 is about 4470.3462953109. The cubic root of 19983996 is about 271.3693397728.

The spelling of 19983996 in words is "nineteen million, nine hundred eighty-three thousand, nine hundred ninety-six".