18708084 has 72 divisors (see below), whose sum is σ = 51673440. Its totient is φ = 5901984.

The previous prime is 18708023. The next prime is 18708089. The reversal of 18708084 is 48080781.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18708089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17962 + ... + 18974.

Almost surely, 2^18708084 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 18708084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25836720).

18708084 is an abundant number, since it is smaller than the sum of its proper divisors (32965356).

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

18708084 is a wasteful number, since it uses less digits than its factorization.

18708084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 18708084 is about 4325.2842681146. The cubic root of 18708084 is about 265.4665283860.

The spelling of 18708084 in words is "eighteen million, seven hundred eight thousand, eighty-four".