2208840 has 64 divisors (see below), whose sum is σ = 6739200. Its totient is φ = 579072.

The previous prime is 2208839. The next prime is 2208847. The reversal of 2208840 is 488022.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2208840.

It is not an unprimeable number, because it can be changed into a prime (2208847) 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, 9364 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (105300).

2^2208840 is an apocalyptic number.

2208840 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 2208840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3369600).

2208840 is an abundant number, since it is smaller than the sum of its proper divisors (4530360).

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

2208840 is a wasteful number, since it uses less digits than its factorization.

2208840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 2208840 is about 1486.2166733017. The cubic root of 2208840 is about 130.2331123118.

The spelling of 2208840 in words is "two million, two hundred eight thousand, eight hundred forty".