2218380 has 24 divisors (see below), whose sum is σ = 6211632. Its totient is φ = 591552.

The previous prime is 2218367. The next prime is 2218423. The reversal of 2218380 is 838122.

It is a self number, because there is not a number n which added to its sum of digits gives 2218380.

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, 18427 + ... + 18546.

It is an arithmetic number, because the mean of its divisors is an integer number (258818).

2^2218380 is an apocalyptic number.

2218380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218380 is an abundant number, since it is smaller than the sum of its proper divisors (3993252).

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

2218380 is a wasteful number, since it uses less digits than its factorization.

2218380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36985 (or 36983 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2218380 is about 1489.4227069573. The cubic root of 2218380 is about 130.4203356946.

The spelling of 2218380 in words is "two million, two hundred eighteen thousand, three hundred eighty".