19889692 has 6 divisors (see below), whose sum is σ = 34806968. Its totient is φ = 9944844.

The previous prime is 19889689. The next prime is 19889717. The reversal of 19889692 is 29698891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2486208 + ... + 2486215.

Almost surely, 2^19889692 is an apocalyptic number.

It is an amenable number.

19889692 is a deficient number, since it is larger than the sum of its proper divisors (14917276).

19889692 is a wasteful number, since it uses less digits than its factorization.

19889692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972427 (or 4972425 counting only the distinct ones).

The product of its digits is 559872, while the sum is 52.

The square root of 19889692 is about 4459.7860935251. The cubic root of 19889692 is about 270.9418047449.

The spelling of 19889692 in words is "nineteen million, eight hundred eighty-nine thousand, six hundred ninety-two".