18085704 has 128 divisors (see below), whose sum is σ = 57120000. Its totient is φ = 4769856.

The previous prime is 18085699. The next prime is 18085709. The reversal of 18085704 is 40758081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18085699) and next prime (18085709).

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18085709) 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 31 ways as a sum of consecutive naturals, for example, 1391202 + ... + 1391214.

It is an arithmetic number, because the mean of its divisors is an integer number (446250).

Almost surely, 2^18085704 is an apocalyptic number.

18085704 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 18085704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28560000).

18085704 is an abundant number, since it is smaller than the sum of its proper divisors (39034296).

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

18085704 is an equidigital number, since it uses as much as digits as its factorization.

18085704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 18085704 is about 4252.7290061794. The cubic root of 18085704 is about 262.4894217959.

The spelling of 18085704 in words is "eighteen million, eighty-five thousand, seven hundred four".