19840896 has 64 divisors (see below), whose sum is σ = 58568400. Its totient is φ = 6612480.

The previous prime is 19840841. The next prime is 19840913. The reversal of 19840896 is 69804891.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×19840896² = 787322308165632, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 586 + ... + 6326.

Almost surely, 2^19840896 is an apocalyptic number.

19840896 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 19840896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29284200).

19840896 is an abundant number, since it is smaller than the sum of its proper divisors (38727504).

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

19840896 is an equidigital number, since it uses as much as digits as its factorization.

19840896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764 (or 5746 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 19840896 is about 4454.3120680976. The cubic root of 19840896 is about 270.7200533172.

It can be divided in two parts, 19840 and 896, that added together give a 4-th power (20736 = 12⁴).

The spelling of 19840896 in words is "nineteen million, eight hundred forty thousand, eight hundred ninety-six".