19998892 has 12 divisors (see below), whose sum is σ = 35338576. Its totient is φ = 9902160.

The previous prime is 19998877. The next prime is 19998899. The reversal of 19998892 is 29889991.

It is not an unprimeable number, because it can be changed into a prime (19998899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23859 + ... + 24682.

Almost surely, 2^19998892 is an apocalyptic number.

It is an amenable number.

19998892 is a deficient number, since it is larger than the sum of its proper divisors (15339684).

19998892 is a wasteful number, since it uses less digits than its factorization.

19998892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48648 (or 48646 counting only the distinct ones).

The product of its digits is 839808, while the sum is 55.

The square root of 19998892 is about 4472.0120751179. The cubic root of 19998892 is about 271.4367489424.

The spelling of 19998892 in words is "nineteen million, nine hundred ninety-eight thousand, eight hundred ninety-two".