19994886 has 24 divisors (see below), whose sum is σ = 44141760. Its totient is φ = 6538896.

The previous prime is 19994879. The next prime is 19994899. The reversal of 19994886 is 68849991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9526 + ... + 11433.

It is an arithmetic number, because the mean of its divisors is an integer number (1839240).

Almost surely, 2^19994886 is an apocalyptic number.

19994886 is an abundant number, since it is smaller than the sum of its proper divisors (24146874).

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

19994886 is a wasteful number, since it uses less digits than its factorization.

19994886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020 (or 21017 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 19994886 is about 4471.5641558631. The cubic root of 19994886 is about 271.4186238011.

The spelling of 19994886 in words is "nineteen million, nine hundred ninety-four thousand, eight hundred eighty-six".