18008210 has 32 divisors (see below), whose sum is σ = 36509184. Its totient is φ = 6336000.

The previous prime is 18008209. The next prime is 18008213. The reversal of 18008210 is 1280081.

It is not an unprimeable number, because it can be changed into a prime (18008213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (1140912).

Almost surely, 2^18008210 is an apocalyptic number.

18008210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18008210 is an abundant number, since it is smaller than the sum of its proper divisors (18500974).

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

18008210 is a wasteful number, since it uses less digits than its factorization.

18008210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 18008210 is about 4243.6081345949. The cubic root of 18008210 is about 262.1139783402.

Adding to 18008210 its reverse (1280081), we get a palindrome (19288291).

The spelling of 18008210 in words is "eighteen million, eight thousand, two hundred ten".