1218000 has 160 divisors (see below), whose sum is σ = 4642560. Its totient is φ = 268800.

The previous prime is 1217989. The next prime is 1218017. The reversal of 1218000 is 8121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41986 + ... + 42014.

It is an arithmetic number, because the mean of its divisors is an integer number (29016).

2^1218000 is an apocalyptic number.

1218000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321280).

1218000 is an abundant number, since it is smaller than the sum of its proper divisors (3424560).

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

1218000 is a wasteful number, since it uses less digits than its factorization.

1218000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1218000 is about 1103.6303729057. The cubic root of 1218000 is about 106.7945514762.

It can be divided in two parts, 12 and 18000, that multiplied together give a cube (216000 = 60³).

The spelling of 1218000 in words is "one million, two hundred eighteen thousand".