1218056 has 16 divisors (see below), whose sum is σ = 2610240. Its totient is φ = 522000.

The previous prime is 1218043. The next prime is 1218089. The reversal of 1218056 is 6508121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10820 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (163140).

2^1218056 is an apocalyptic number.

It is an amenable number.

1218056 is an abundant number, since it is smaller than the sum of its proper divisors (1392184).

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

1218056 is a wasteful number, since it uses less digits than its factorization.

1218056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21764 (or 21760 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1218056 is about 1103.6557434273. The cubic root of 1218056 is about 106.7961881492.

The spelling of 1218056 in words is "one million, two hundred eighteen thousand, fifty-six".