19998316 has 36 divisors (see below), whose sum is σ = 39453232. Its totient is φ = 8816544.

The previous prime is 19998263. The next prime is 19998337. The reversal of 19998316 is 61389991.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27145 + ... + 27871.

Almost surely, 2^19998316 is an apocalyptic number.

It is an amenable number.

19998316 is a deficient number, since it is larger than the sum of its proper divisors (19454916).

19998316 is a wasteful number, since it uses less digits than its factorization.

19998316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 765 counting only the distinct ones).

The product of its digits is 104976, while the sum is 46.

The square root of 19998316 is about 4471.9476741125. The cubic root of 19998316 is about 271.4341429802.

The spelling of 19998316 in words is "nineteen million, nine hundred ninety-eight thousand, three hundred sixteen".