2183820 has 48 divisors (see below), whose sum is σ = 6477408. Its totient is φ = 547840.

The previous prime is 2183809. The next prime is 2183821. The reversal of 2183820 is 283812.

It is not an unprimeable number, because it can be changed into a prime (2183821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (134946).

2^2183820 is an apocalyptic number.

2183820 is a gapful number since it is divisible by the number (20) 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 2183820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3238704).

2183820 is an abundant number, since it is smaller than the sum of its proper divisors (4293588).

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

2183820 is a wasteful number, since it uses less digits than its factorization.

2183820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2183820 is about 1477.7753550523. The cubic root of 2183820 is about 129.7395178660.

It can be divided in two parts, 2183 and 820, that added together give a palindrome (3003).

The spelling of 2183820 in words is "two million, one hundred eighty-three thousand, eight hundred twenty".