18822356 has 12 divisors (see below), whose sum is σ = 37644768. Its totient is φ = 8066712.

The previous prime is 18822337. The next prime is 18822361. The reversal of 18822356 is 65322881.

18822356 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 336086 + ... + 336141.

It is an arithmetic number, because the mean of its divisors is an integer number (3137064).

Almost surely, 2^18822356 is an apocalyptic number.

It is an amenable number.

18822356 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.

18822356 is a wasteful number, since it uses less digits than its factorization.

18822356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672238 (or 672236 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 18822356 is about 4338.4739252415. The cubic root of 18822356 is about 266.0059357599.

The spelling of 18822356 in words is "eighteen million, eight hundred twenty-two thousand, three hundred fifty-six".