18086226 has 8 divisors (see below), whose sum is σ = 36172464. Its totient is φ = 6028740.

The previous prime is 18086221. The next prime is 18086251. The reversal of 18086226 is 62268081.

It is a sphenic number, since it is the product of 3 distinct primes.

18086226 is an admirable number.

It is a super-2 number, since 2×18086226² = 654223141846152, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18086221) 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 3 ways as a sum of consecutive naturals, for example, 1507180 + ... + 1507191.

It is an arithmetic number, because the mean of its divisors is an integer number (4521558).

Almost surely, 2^18086226 is an apocalyptic number.

18086226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18086226 is a wasteful number, since it uses less digits than its factorization.

18086226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014376.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 18086226 is about 4252.7903780930. The cubic root of 18086226 is about 262.4919471453.

The spelling of 18086226 in words is "eighteen million, eighty-six thousand, two hundred twenty-six".