1289218 has 16 divisors (see below), whose sum is σ = 2242944. Its totient is φ = 544320.

The previous prime is 1289213. The next prime is 1289231. The reversal of 1289218 is 8129821.

It is a happy number.

1289218 is nontrivially palindromic in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 1289218.

It is not an unprimeable number, because it can be changed into a prime (1289213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 1642.

It is an arithmetic number, because the mean of its divisors is an integer number (140184).

2^1289218 is an apocalyptic number.

1289218 is a deficient number, since it is larger than the sum of its proper divisors (953726).

1289218 is a wasteful number, since it uses less digits than its factorization.

1289218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377.

The product of its digits is 2304, while the sum is 31.

The square root of 1289218 is about 1135.4373606677. The cubic root of 1289218 is about 108.8367221233.

The spelling of 1289218 in words is "one million, two hundred eighty-nine thousand, two hundred eighteen".