18996208 has 80 divisors (see below), whose sum is σ = 48639744. Its totient is φ = 6958080.

The previous prime is 18996199. The next prime is 18996209. The reversal of 18996208 is 80269981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20491 + ... + 21397.

Almost surely, 2^18996208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18996208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24319872).

18996208 is an abundant number, since it is smaller than the sum of its proper divisors (29643536).

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

18996208 is a wasteful number, since it uses less digits than its factorization.

18996208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 18996208 is about 4358.4639496043. The cubic root of 18996208 is about 266.8224117980.

The spelling of 18996208 in words is "eighteen million, nine hundred ninety-six thousand, two hundred eight".