1218268 has 12 divisors (see below), whose sum is σ = 2147152. Its totient is φ = 604800.

The previous prime is 1218263. The next prime is 1218277. The reversal of 1218268 is 8628121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 405 + ... + 1612.

2^1218268 is an apocalyptic number.

It is an amenable number.

1218268 is a deficient number, since it is larger than the sum of its proper divisors (928884).

1218268 is a wasteful number, since it uses less digits than its factorization.

1218268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2170 counting only the distinct ones).

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

The square root of 1218268 is about 1103.7517836905. The cubic root of 1218268 is about 106.8023836713.

The spelling of 1218268 in words is "one million, two hundred eighteen thousand, two hundred sixty-eight".