18672206 has 16 divisors (see below), whose sum is σ = 32192640. Its totient is φ = 7956600.

The previous prime is 18672187. The next prime is 18672221. The reversal of 18672206 is 60227681.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1220 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (2012040).

Almost surely, 2^18672206 is an apocalyptic number.

18672206 is a deficient number, since it is larger than the sum of its proper divisors (13520434).

18672206 is a wasteful number, since it uses less digits than its factorization.

18672206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18672206 is about 4321.1348046549. The cubic root of 18672206 is about 265.2967176030.

Adding to 18672206 its reverse (60227681), we get a palindrome (78899887).

The spelling of 18672206 in words is "eighteen million, six hundred seventy-two thousand, two hundred six".