18208086 has 16 divisors (see below), whose sum is σ = 39217584. Its totient is φ = 5602464.

The previous prime is 18208081. The next prime is 18208103. The reversal of 18208086 is 68080281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18208081) 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 7 ways as a sum of consecutive naturals, for example, 116641 + ... + 116796.

It is an arithmetic number, because the mean of its divisors is an integer number (2451099).

Almost surely, 2^18208086 is an apocalyptic number.

18208086 is an abundant number, since it is smaller than the sum of its proper divisors (21009498).

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

18208086 is a wasteful number, since it uses less digits than its factorization.

18208086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233455.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18208086 is about 4267.0933901193. The cubic root of 18208086 is about 263.0801608117.

The spelling of 18208086 in words is "eighteen million, two hundred eight thousand, eighty-six".