18394284 has 48 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 5880000.

The previous prime is 18394241. The next prime is 18394297. The reversal of 18394284 is 48249381.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73159 + ... + 73409.

It is an arithmetic number, because the mean of its divisors is an integer number (931392).

Almost surely, 2^18394284 is an apocalyptic number.

It is an amenable number.

18394284 is an abundant number, since it is smaller than the sum of its proper divisors (26312532).

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

18394284 is a wasteful number, since it uses less digits than its factorization.

18394284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 484 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 18394284 is about 4288.8557914670. The cubic root of 18394284 is about 263.9738840098.

The spelling of 18394284 in words is "eighteen million, three hundred ninety-four thousand, two hundred eighty-four".