2216386 has 8 divisors (see below), whose sum is σ = 3349260. Its totient is φ = 1099968.

The previous prime is 2216377. The next prime is 2216387. The reversal of 2216386 is 6836122.

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 185761 = 1425^2 + 431^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2216387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771 + ... + 4318.

2^2216386 is an apocalyptic number.

2216386 is a deficient number, since it is larger than the sum of its proper divisors (1132874).

2216386 is a wasteful number, since it uses less digits than its factorization.

2216386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8228.

The product of its digits is 3456, while the sum is 28.

The square root of 2216386 is about 1488.7531696020. The cubic root of 2216386 is about 130.3812476955.

The spelling of 2216386 in words is "two million, two hundred sixteen thousand, three hundred eighty-six".