19886612 has 12 divisors (see below), whose sum is σ = 35742420. Its totient is φ = 9674496.

The previous prime is 19886611. The next prime is 19886621. The reversal of 19886612 is 21668891.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 5400976 = 3806^2 + 2324^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19886612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19886611) 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, 67037 + ... + 67332.

It is an arithmetic number, because the mean of its divisors is an integer number (2978535).

Almost surely, 2^19886612 is an apocalyptic number.

It is an amenable number.

19886612 is a deficient number, since it is larger than the sum of its proper divisors (15855808).

19886612 is a wasteful number, since it uses less digits than its factorization.

19886612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134410 (or 134408 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 19886612 is about 4459.4407721148. The cubic root of 19886612 is about 270.9278185415.

The spelling of 19886612 in words is "nineteen million, eight hundred eighty-six thousand, six hundred twelve".