18342288 has 50 divisors (see below), whose sum is σ = 53091654. Its totient is φ = 6113664.

The previous prime is 18342283. The next prime is 18342319. The reversal of 18342288 is 88224381.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14837904 + 3504384 = 3852^2 + 1872^2 .

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 not an unprimeable number, because it can be changed into a prime (18342283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5781 + ... + 8372.

Almost surely, 2^18342288 is an apocalyptic number.

18342288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18342288 is an abundant number, since it is smaller than the sum of its proper divisors (34749366).

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

18342288 is a wasteful number, since it uses less digits than its factorization.

18342288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14173 (or 14158 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 18342288 is about 4282.7897450143. The cubic root of 18342288 is about 263.7249200863.

The spelling of 18342288 in words is "eighteen million, three hundred forty-two thousand, two hundred eighty-eight".