18286806 has 16 divisors (see below), whose sum is σ = 37562544. Its totient is φ = 5930784.

The previous prime is 18286787. The next prime is 18286813. The reversal of 18286806 is 60868281.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 40965 + ... + 41408.

It is an arithmetic number, because the mean of its divisors is an integer number (2347659).

Almost surely, 2^18286806 is an apocalyptic number.

18286806 is an abundant number, since it is smaller than the sum of its proper divisors (19275738).

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

18286806 is a wasteful number, since it uses less digits than its factorization.

18286806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82415.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 18286806 is about 4276.3075193442. The cubic root of 18286806 is about 263.4587452981.

The spelling of 18286806 in words is "eighteen million, two hundred eighty-six thousand, eight hundred six".