2218490 has 8 divisors (see below), whose sum is σ = 3993300. Its totient is φ = 887392.

The previous prime is 2218451. The next prime is 2218519. The reversal of 2218490 is 948122.

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 1369 = 1489^2 + 37^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 110915 + ... + 110934.

2^2218490 is an apocalyptic number.

2218490 is a deficient number, since it is larger than the sum of its proper divisors (1774810).

2218490 is a wasteful number, since it uses less digits than its factorization.

2218490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221856.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2218490 is about 1489.4596335584. The cubic root of 2218490 is about 130.4224913217.

The spelling of 2218490 in words is "two million, two hundred eighteen thousand, four hundred ninety".