2243580 has 48 divisors (see below), whose sum is σ = 6395424. Its totient is φ = 587520.

The previous prime is 2243551. The next prime is 2243587. The reversal of 2243580 is 853422.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2243580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3354 + ... + 3966.

It is an arithmetic number, because the mean of its divisors is an integer number (133238).

2^2243580 is an apocalyptic number.

2243580 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 2243580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3197712).

2243580 is an abundant number, since it is smaller than the sum of its proper divisors (4151844).

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

2243580 is a wasteful number, since it uses less digits than its factorization.

2243580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2243580 is about 1497.8584712849. The cubic root of 2243580 is about 130.9123201715.

The spelling of 2243580 in words is "two million, two hundred forty-three thousand, five hundred eighty".