20189892 has 24 divisors (see below), whose sum is σ = 47214496. Its totient is φ = 6715008.

The previous prime is 20189891. The next prime is 20189899. The reversal of 20189892 is 29898102.

It is a self number, because there is not a number n which added to its sum of digits gives 20189892.

It is not an unprimeable number, because it can be changed into a prime (20189891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4668 + ... + 7884.

Almost surely, 2^20189892 is an apocalyptic number.

It is an amenable number.

20189892 is an abundant number, since it is smaller than the sum of its proper divisors (27024604).

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

20189892 is a wasteful number, since it uses less digits than its factorization.

20189892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 20189892 is about 4493.3163698987. The cubic root of 20189892 is about 272.2981340301.

The spelling of 20189892 in words is "twenty million, one hundred eighty-nine thousand, eight hundred ninety-two".