18466284 has 48 divisors (see below), whose sum is σ = 46037376. Its totient is φ = 5740800.

The previous prime is 18466249. The next prime is 18466291. The reversal of 18466284 is 48266481.

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, 26379 + ... + 27069.

It is an arithmetic number, because the mean of its divisors is an integer number (959112).

Almost surely, 2^18466284 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 18466284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23018688).

18466284 is an abundant number, since it is smaller than the sum of its proper divisors (27571092).

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

18466284 is a wasteful number, since it uses less digits than its factorization.

18466284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 844 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 18466284 is about 4297.2414407385. The cubic root of 18466284 is about 264.3178563572.

The spelling of 18466284 in words is "eighteen million, four hundred sixty-six thousand, two hundred eighty-four".