18809226 has 32 divisors (see below), whose sum is σ = 43243200. Its totient is φ = 6053040.

The previous prime is 18809213. The next prime is 18809227. The reversal of 18809226 is 62290881.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18809227) 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, 4440 + ... + 7571.

It is an arithmetic number, because the mean of its divisors is an integer number (1351350).

Almost surely, 2^18809226 is an apocalyptic number.

18809226 is an abundant number, since it is smaller than the sum of its proper divisors (24433974).

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

18809226 is a wasteful number, since it uses less digits than its factorization.

18809226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12051 (or 12045 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18809226 is about 4336.9604563565. The cubic root of 18809226 is about 265.9440683652.

The spelling of 18809226 in words is "eighteen million, eight hundred nine thousand, two hundred twenty-six".