2218590 has 96 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 531360.

The previous prime is 2218583. The next prime is 2218597. The reversal of 2218590 is 958122.

It is an interprime number because it is at equal distance from previous prime (2218583) and next prime (2218597).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218597) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26689 + ... + 26771.

It is an arithmetic number, because the mean of its divisors is an integer number (68796).

2^2218590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3302208).

2218590 is an abundant number, since it is smaller than the sum of its proper divisors (4385826).

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

2218590 is a wasteful number, since it uses less digits than its factorization.

2218590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2218590 is about 1489.4932024014. The cubic root of 2218590 is about 130.4244509208.

The spelling of 2218590 in words is "two million, two hundred eighteen thousand, five hundred ninety".