19688006 has 16 divisors (see below), whose sum is σ = 33675264. Its totient is φ = 8552064.

The previous prime is 19687991. The next prime is 19688029. The reversal of 19688006 is 60088691.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 21830 + ... + 22713.

It is an arithmetic number, because the mean of its divisors is an integer number (2104704).

Almost surely, 2^19688006 is an apocalyptic number.

19688006 is a deficient number, since it is larger than the sum of its proper divisors (13987258).

19688006 is a wasteful number, since it uses less digits than its factorization.

19688006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44575.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 19688006 is about 4437.1168566987. The cubic root of 19688006 is about 270.0228878631.

The spelling of 19688006 in words is "nineteen million, six hundred eighty-eight thousand, six".