1818288 has 100 divisors (see below), whose sum is σ = 5581488. Its totient is φ = 570240.

The previous prime is 1818277. The next prime is 1818293. The reversal of 1818288 is 8828181.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29778 + ... + 29838.

2^1818288 is an apocalyptic number.

1818288 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 1818288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2790744).

1818288 is an abundant number, since it is smaller than the sum of its proper divisors (3763200).

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

1818288 is a wasteful number, since it uses less digits than its factorization.

1818288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 89 counting only the distinct ones).

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

The square root of 1818288 is about 1348.4390976236. The cubic root of 1818288 is about 122.0546203511.

The spelling of 1818288 in words is "one million, eight hundred eighteen thousand, two hundred eighty-eight".