19890336 has 24 divisors (see below), whose sum is σ = 52212384. Its totient is φ = 6630080.

The previous prime is 19890307. The next prime is 19890341. The reversal of 19890336 is 63309891.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 19890294 and 19890303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103500 + ... + 103691.

It is an arithmetic number, because the mean of its divisors is an integer number (2175516).

Almost surely, 2^19890336 is an apocalyptic number.

19890336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19890336 is an abundant number, since it is smaller than the sum of its proper divisors (32322048).

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

19890336 is a wasteful number, since it uses less digits than its factorization.

19890336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207204 (or 207196 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 19890336 is about 4459.8582937129. The cubic root of 19890336 is about 270.9447289504.

The spelling of 19890336 in words is "nineteen million, eight hundred ninety thousand, three hundred thirty-six".