18874226 has 32 divisors (see below), whose sum is σ = 33733632. Its totient is φ = 7750080.

The previous prime is 18874217. The next prime is 18874231. The reversal of 18874226 is 62247881.

It is a self number, because there is not a number n which added to its sum of digits gives 18874226.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68000 + ... + 68276.

It is an arithmetic number, because the mean of its divisors is an integer number (1054176).

Almost surely, 2^18874226 is an apocalyptic number.

18874226 is a deficient number, since it is larger than the sum of its proper divisors (14859406).

18874226 is a wasteful number, since it uses less digits than its factorization.

18874226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its digits is 43008, while the sum is 38.

The square root of 18874226 is about 4344.4477209422. The cubic root of 18874226 is about 266.2500616427.

The spelling of 18874226 in words is "eighteen million, eight hundred seventy-four thousand, two hundred twenty-six".