1218316 has 12 divisors (see below), whose sum is σ = 2325960. Its totient is φ = 553760.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218316 is 6138121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1218313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13801 + ... + 13888.

It is an arithmetic number, because the mean of its divisors is an integer number (193830).

2^1218316 is an apocalyptic number.

It is an amenable number.

1218316 is a deficient number, since it is larger than the sum of its proper divisors (1107644).

1218316 is a wasteful number, since it uses less digits than its factorization.

1218316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27704 (or 27702 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 1218316 is about 1103.7735274956. The cubic root of 1218316 is about 106.8037863312.

The spelling of 1218316 in words is "one million, two hundred eighteen thousand, three hundred sixteen".