2184640 has 28 divisors (see below), whose sum is σ = 5202936. Its totient is φ = 873728.

The previous prime is 2184631. The next prime is 2184641. The reversal of 2184640 is 464812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2184641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3094 + ... + 3733.

2^2184640 is an apocalyptic number.

2184640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2184640 is an abundant number, since it is smaller than the sum of its proper divisors (3018296).

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

2184640 is an equidigital number, since it uses as much as digits as its factorization.

2184640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844 (or 6834 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2184640 is about 1478.0527730768. The cubic root of 2184640 is about 129.7557544136.

The spelling of 2184640 in words is "two million, one hundred eighty-four thousand, six hundred forty".