18034240 has 112 divisors (see below), whose sum is σ = 50182272. Its totient is φ = 6045696.

The previous prime is 18034217. The next prime is 18034241. The reversal of 18034240 is 4243081.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (18034241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185872 + ... + 185968.

It is an arithmetic number, because the mean of its divisors is an integer number (448056).

Almost surely, 2^18034240 is an apocalyptic number.

18034240 is a gapful number since it is divisible by the number (10) 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 18034240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25091136).

18034240 is an abundant number, since it is smaller than the sum of its proper divisors (32148032).

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

18034240 is an equidigital number, since it uses as much as digits as its factorization.

18034240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 18034240 is about 4246.6739926677. The cubic root of 18034240 is about 262.2402085825.

The spelling of 18034240 in words is "eighteen million, thirty-four thousand, two hundred forty".