1218324 has 12 divisors (see below), whose sum is σ = 2842784. Its totient is φ = 406104.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218324 is 4238121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1218324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50752 + ... + 50775.

2^1218324 is an apocalyptic number.

It is an amenable number.

1218324 is an abundant number, since it is smaller than the sum of its proper divisors (1624460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218324 is a wasteful number, since it uses less digits than its factorization.

1218324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101534 (or 101532 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1218324 is about 1103.7771514214. Note that the first 3 decimals coincide. The cubic root of 1218324 is about 106.8040201043.

It can be divided in two parts, 12 and 18324, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 1218324 in words is "one million, two hundred eighteen thousand, three hundred twenty-four".