19985212 has 12 divisors (see below), whose sum is σ = 37664536. Its totient is φ = 9223920.

The previous prime is 19985209. The next prime is 19985219. The reversal of 19985212 is 21258991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19985219) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 192114 + ... + 192217.

Almost surely, 2^19985212 is an apocalyptic number.

It is an amenable number.

19985212 is a deficient number, since it is larger than the sum of its proper divisors (17679324).

19985212 is a wasteful number, since it uses less digits than its factorization.

19985212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384348 (or 384346 counting only the distinct ones).

The product of its digits is 12960, while the sum is 37.

The square root of 19985212 is about 4470.4823006025. The cubic root of 19985212 is about 271.3748438176.

The spelling of 19985212 in words is "nineteen million, nine hundred eighty-five thousand, two hundred twelve".