18708144 has 80 divisors (see below), whose sum is σ = 59496192. Its totient is φ = 4932864.

The previous prime is 18708119. The next prime is 18708163. The reversal of 18708144 is 44180781.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 2227 + ... + 6509.

Almost surely, 2^18708144 is an apocalyptic number.

18708144 is a gapful number since it is divisible by the number (14) 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 18708144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29748096).

18708144 is an abundant number, since it is smaller than the sum of its proper divisors (40788048).

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

18708144 is a wasteful number, since it uses less digits than its factorization.

18708144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314 (or 4308 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 18708144 is about 4325.2912040694. The cubic root of 18708144 is about 265.4668121844.

The spelling of 18708144 in words is "eighteen million, seven hundred eight thousand, one hundred forty-four".