19879344 has 60 divisors (see below), whose sum is σ = 57706376. Its totient is φ = 6625152.

The previous prime is 19879331. The next prime is 19879357. The reversal of 19879344 is 44397891.

It is an interprime number because it is at equal distance from previous prime (19879331) and next prime (19879357).

It is a self number, because there is not a number n which added to its sum of digits gives 19879344.

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 11 ways as a sum of consecutive naturals, for example, 1332 + ... + 6444.

Almost surely, 2^19879344 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 19879344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28853188).

19879344 is an abundant number, since it is smaller than the sum of its proper divisors (37827032).

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

19879344 is an equidigital number, since it uses as much as digits as its factorization.

19879344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5136 (or 5118 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19879344 is about 4458.6257972609. The cubic root of 19879344 is about 270.8948090086.

The spelling of 19879344 in words is "nineteen million, eight hundred seventy-nine thousand, three hundred forty-four".