1218888 has 112 divisors (see below), whose sum is σ = 3934800. Its totient is φ = 349920.

The previous prime is 1218859. The next prime is 1218901. The reversal of 1218888 is 8888121.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 64143 + ... + 64161.

2^1218888 is an apocalyptic number.

1218888 is a gapful number since it is divisible by the number (18) 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 1218888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967400).

1218888 is an abundant number, since it is smaller than the sum of its proper divisors (2715912).

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

1218888 is a wasteful number, since it uses less digits than its factorization.

1218888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 35 counting only the distinct ones).

The product of its digits is 8192, while the sum is 36.

The square root of 1218888 is about 1104.0326082141. The cubic root of 1218888 is about 106.8204985272.

It can be divided in two parts, 121 and 8888, that added together give a palindrome (9009).

The spelling of 1218888 in words is "one million, two hundred eighteen thousand, eight hundred eighty-eight".