20163992 has 16 divisors (see below), whose sum is σ = 38021400. Its totient is φ = 10024960.

The previous prime is 20163991. The next prime is 20164003. The reversal of 20163992 is 29936102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20163991) 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, 5609 + ... + 8472.

Almost surely, 2^20163992 is an apocalyptic number.

It is an amenable number.

20163992 is a deficient number, since it is larger than the sum of its proper divisors (17857408).

20163992 is a wasteful number, since it uses less digits than its factorization.

20163992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266 (or 14262 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 20163992 is about 4490.4333866566. The cubic root of 20163992 is about 272.1816476957.

The spelling of 20163992 in words is "twenty million, one hundred sixty-three thousand, nine hundred ninety-two".