2218530 has 16 divisors (see below), whose sum is σ = 5324544. Its totient is φ = 591600.

The previous prime is 2218523. The next prime is 2218547. The reversal of 2218530 is 358122.

It is a junction number, because it is equal to n+sod(n) for n = 2218497 and 2218506.

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, 36946 + ... + 37005.

It is an arithmetic number, because the mean of its divisors is an integer number (332784).

2^2218530 is an apocalyptic number.

2218530 is an abundant number, since it is smaller than the sum of its proper divisors (3106014).

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

2218530 is a wasteful number, since it uses less digits than its factorization.

2218530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73961.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2218530 is about 1489.4730611864. The cubic root of 2218530 is about 130.4232751684.

The spelling of 2218530 in words is "two million, two hundred eighteen thousand, five hundred thirty".