18798912 has 224 divisors, whose sum is σ = 64373760. Its totient is φ = 5322240.

The previous prime is 18798907. The next prime is 18798929. The reversal of 18798912 is 21989781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437163 + ... + 437205.

Almost surely, 2^18798912 is an apocalyptic number.

18798912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18798912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32186880).

18798912 is an abundant number, since it is smaller than the sum of its proper divisors (45574848).

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

18798912 is a wasteful number, since it uses less digits than its factorization.

18798912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 82 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 18798912 is about 4335.7712116762. The cubic root of 18798912 is about 265.8954495184.

It can be divided in two parts, 187 and 98912, that added together give a palindrome (99099).

The spelling of 18798912 in words is "eighteen million, seven hundred ninety-eight thousand, nine hundred twelve".