18992112 has 40 divisors (see below), whose sum is σ = 51199104. Its totient is φ = 6055104.

The previous prime is 18992107. The next prime is 18992123. The reversal of 18992112 is 21129981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7498 + ... + 9705.

Almost surely, 2^18992112 is an apocalyptic number.

18992112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18992112 is an abundant number, since it is smaller than the sum of its proper divisors (32206992).

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

18992112 is a wasteful number, since it uses less digits than its factorization.

18992112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17237 (or 17231 counting only the distinct ones).

The product of its digits is 2592, while the sum is 33.

The square root of 18992112 is about 4357.9940339564. The cubic root of 18992112 is about 266.8032328272.

The spelling of 18992112 in words is "eighteen million, nine hundred ninety-two thousand, one hundred twelve".