19984896 has 60 divisors (see below), whose sum is σ = 57691062. Its totient is φ = 6660096.

The previous prime is 19984891. The next prime is 19984897. The reversal of 19984896 is 69848991.

It can be written as a sum of positive squares in only one way, i.e., 19927296 + 57600 = 4464^2 + 240^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19984891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2440 + ... + 6776.

Almost surely, 2^19984896 is an apocalyptic number.

19984896 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 19984896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28845531).

19984896 is an abundant number, since it is smaller than the sum of its proper divisors (37706166).

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

19984896 is an equidigital number, since it uses as much as digits as its factorization.

19984896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361 (or 4342 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 19984896 is about 4470.4469575200. The cubic root of 19984896 is about 271.3734135116.

The spelling of 19984896 in words is "nineteen million, nine hundred eighty-four thousand, eight hundred ninety-six".