18067228 has 12 divisors (see below), whose sum is σ = 32063472. Its totient is φ = 8906240.

The previous prime is 18067219. The next prime is 18067241. The reversal of 18067228 is 82276081.

It is a junction number, because it is equal to n+sod(n) for n = 18067193 and 18067202.

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, 31525 + ... + 32092.

It is an arithmetic number, because the mean of its divisors is an integer number (2671956).

Almost surely, 2^18067228 is an apocalyptic number.

It is an amenable number.

18067228 is a deficient number, since it is larger than the sum of its proper divisors (13996244).

18067228 is a wasteful number, since it uses less digits than its factorization.

18067228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63692 (or 63690 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 18067228 is about 4250.5561988992. The cubic root of 18067228 is about 262.4000066615.

The spelling of 18067228 in words is "eighteen million, sixty-seven thousand, two hundred twenty-eight".