18228850 has 24 divisors (see below), whose sum is σ = 34099380. Its totient is φ = 7249920.

The previous prime is 18228829. The next prime is 18228863. The reversal of 18228850 is 5882281.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4173849 + 14055001 = 2043^2 + 3749^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8706 + ... + 10594.

Almost surely, 2^18228850 is an apocalyptic number.

18228850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18228850 is a deficient number, since it is larger than the sum of its proper divisors (15870530).

18228850 is a wasteful number, since it uses less digits than its factorization.

18228850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 18228850 is about 4269.5257347860. The cubic root of 18228850 is about 263.1801259464.

The spelling of 18228850 in words is "eighteen million, two hundred twenty-eight thousand, eight hundred fifty".