2183688 has 48 divisors (see below), whose sum is σ = 6371820. Its totient is φ = 671616.

The previous prime is 2183683. The next prime is 2183707. The reversal of 2183688 is 8863812.

It can be written as a sum of positive squares in 2 ways, for example, as 2022084 + 161604 = 1422^2 + 402^2 .

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 (2183681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231 + ... + 2102.

2^2183688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2183688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3185910).

2183688 is an abundant number, since it is smaller than the sum of its proper divisors (4188132).

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

2183688 is a wasteful number, since it uses less digits than its factorization.

2183688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 2351 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 2183688 is about 1477.7306926501. The cubic root of 2183688 is about 129.7369037981.

The spelling of 2183688 in words is "two million, one hundred eighty-three thousand, six hundred eighty-eight".