18998096 has 40 divisors (see below), whose sum is σ = 39971400. Its totient is φ = 8695296.

The previous prime is 18998093. The next prime is 18998101. The reversal of 18998096 is 69089981.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 16321600 = 1636^2 + 4040^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18998093) 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, 30686 + ... + 31298.

It is an arithmetic number, because the mean of its divisors is an integer number (999285).

Almost surely, 2^18998096 is an apocalyptic number.

18998096 is a gapful number since it is divisible by the number (16) 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 18998096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19985700).

18998096 is an abundant number, since it is smaller than the sum of its proper divisors (20973304).

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

18998096 is a wasteful number, since it uses less digits than its factorization.

18998096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 18998096 is about 4358.6805342902. The cubic root of 18998096 is about 266.8312511767.

The spelling of 18998096 in words is "eighteen million, nine hundred ninety-eight thousand, ninety-six".