18882288 has 80 divisors (see below), whose sum is σ = 54832800. Its totient is φ = 6220800.

The previous prime is 18882221. The next prime is 18882293. The reversal of 18882288 is 88228881.

It is a happy number.

It is a super-2 number, since 2×18882288² = 713081600229888, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46888 + ... + 47288.

It is an arithmetic number, because the mean of its divisors is an integer number (685410).

Almost surely, 2^18882288 is an apocalyptic number.

18882288 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 18882288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27416400).

18882288 is an abundant number, since it is smaller than the sum of its proper divisors (35950512).

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

18882288 is a wasteful number, since it uses less digits than its factorization.

18882288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 515 counting only the distinct ones).

The product of its digits is 131072, while the sum is 45.

The square root of 18882288 is about 4345.3754728447. The cubic root of 18882288 is about 266.2879652269.

The spelling of 18882288 in words is "eighteen million, eight hundred eighty-two thousand, two hundred eighty-eight".