1216318 has 16 divisors (see below), whose sum is σ = 1921680. Its totient is φ = 576576.

The previous prime is 1216277. The next prime is 1216337. The reversal of 1216318 is 8136121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3730 + ... + 4042.

It is an arithmetic number, because the mean of its divisors is an integer number (120105).

2^1216318 is an apocalyptic number.

1216318 is a deficient number, since it is larger than the sum of its proper divisors (705362).

1216318 is a wasteful number, since it uses less digits than its factorization.

1216318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

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

The square root of 1216318 is about 1102.8680791464. The cubic root of 1216318 is about 106.7453694332.

The spelling of 1216318 in words is "one million, two hundred sixteen thousand, three hundred eighteen".