12206818 has 16 divisors (see below), whose sum is σ = 20253240. Its totient is φ = 5481216.

The previous prime is 12206791. The next prime is 12206827. The reversal of 12206818 is 81860221.

It can be written as a sum of positive squares in 4 ways, for example, as 8508889 + 3697929 = 2917^2 + 1923^2 .

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 7 ways as a sum of consecutive naturals, for example, 5383 + ... + 7306.

Almost surely, 2^12206818 is an apocalyptic number.

12206818 is a deficient number, since it is larger than the sum of its proper divisors (8046422).

12206818 is a wasteful number, since it uses less digits than its factorization.

12206818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12741.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 12206818 is about 3493.8256968544. The cubic root of 12206818 is about 230.2506278662.

The spelling of 12206818 in words is "twelve million, two hundred six thousand, eight hundred eighteen".