19988344 has 16 divisors (see below), whose sum is σ = 37811520. Its totient is φ = 9905280.

The previous prime is 19988333. The next prime is 19988347. The reversal of 19988344 is 44388991.

It is a junction number, because it is equal to n+sod(n) for n = 19988294 and 19988303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19988347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10152 + ... + 11959.

It is an arithmetic number, because the mean of its divisors is an integer number (2363220).

Almost surely, 2^19988344 is an apocalyptic number.

It is an amenable number.

19988344 is a deficient number, since it is larger than the sum of its proper divisors (17823176).

19988344 is a wasteful number, since it uses less digits than its factorization.

19988344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22230 (or 22226 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 19988344 is about 4470.8325846536. The cubic root of 19988344 is about 271.3890193259.

The spelling of 19988344 in words is "nineteen million, nine hundred eighty-eight thousand, three hundred forty-four".