2243680 has 48 divisors (see below), whose sum is σ = 5458320. Its totient is φ = 870912.

The previous prime is 2243669. The next prime is 2243693. The reversal of 2243680 is 863422.

It is a happy number.

2243680 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5731 + ... + 6109.

It is an arithmetic number, because the mean of its divisors is an integer number (113715).

2^2243680 is an apocalyptic number.

2243680 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 2243680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2729160).

2243680 is an abundant number, since it is smaller than the sum of its proper divisors (3214640).

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

2243680 is a wasteful number, since it uses less digits than its factorization.

2243680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2243680 is about 1497.8918519039. The cubic root of 2243680 is about 130.9142651341.

The spelling of 2243680 in words is "two million, two hundred forty-three thousand, six hundred eighty".