18336460 has 48 divisors (see below), whose sum is σ = 40219200. Its totient is φ = 7015680.

The previous prime is 18336391. The next prime is 18336467. The reversal of 18336460 is 6463381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18336467) 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 15 ways as a sum of consecutive naturals, for example, 52366 + ... + 52714.

It is an arithmetic number, because the mean of its divisors is an integer number (837900).

Almost surely, 2^18336460 is an apocalyptic number.

18336460 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 18336460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20109600).

18336460 is an abundant number, since it is smaller than the sum of its proper divisors (21882740).

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

18336460 is a wasteful number, since it uses less digits than its factorization.

18336460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 18336460 is about 4282.1092933273. The cubic root of 18336460 is about 263.6969855187.

The spelling of 18336460 in words is "eighteen million, three hundred thirty-six thousand, four hundred sixty".