2183940 has 72 divisors (see below), whose sum is σ = 7233408. Its totient is φ = 528960.

The previous prime is 2183921. The next prime is 2183953. The reversal of 2183940 is 493812.

2183940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1429 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (100464).

2^2183940 is an apocalyptic number.

2183940 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 2183940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3616704).

2183940 is an abundant number, since it is smaller than the sum of its proper divisors (5049468).

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

2183940 is a wasteful number, since it uses less digits than its factorization.

2183940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2183940 is about 1477.8159560649. The cubic root of 2183940 is about 129.7418942000.

The spelling of 2183940 in words is "two million, one hundred eighty-three thousand, nine hundred forty".