18334140 has 48 divisors (see below), whose sum is σ = 56004480. Its totient is φ = 4444480.

The previous prime is 18334139. The next prime is 18334153. The reversal of 18334140 is 4143381.

It is a super-2 number, since 2×18334140² = 672281379079200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18334140.

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, 13230 + ... + 14549.

It is an arithmetic number, because the mean of its divisors is an integer number (1166760).

Almost surely, 2^18334140 is an apocalyptic number.

18334140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18334140 is an abundant number, since it is smaller than the sum of its proper divisors (37670340).

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

18334140 is a wasteful number, since it uses less digits than its factorization.

18334140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27802 (or 27800 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 18334140 is about 4281.8383902245. The cubic root of 18334140 is about 263.6858637281.

It can be divided in two parts, 183341 and 40, that added together give a palindrome (183381).

The spelling of 18334140 in words is "eighteen million, three hundred thirty-four thousand, one hundred forty".