18098212 has 36 divisors (see below), whose sum is σ = 35441308. Its totient is φ = 8078400.

The previous prime is 18098209. The next prime is 18098219. The reversal of 18098212 is 21289081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 17842176 = 506^2 + 4224^2 .

It is not an unprimeable number, because it can be changed into a prime (18098219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29218 + ... + 29830.

Almost surely, 2^18098212 is an apocalyptic number.

It is an amenable number.

18098212 is a deficient number, since it is larger than the sum of its proper divisors (17343096).

18098212 is a wasteful number, since it uses less digits than its factorization.

18098212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 18098212 is about 4254.1993371256. The cubic root of 18098212 is about 262.5499200601.

The spelling of 18098212 in words is "eighteen million, ninety-eight thousand, two hundred twelve".