2813218 has 4 divisors (see below), whose sum is σ = 4219830. Its totient is φ = 1406608.

The previous prime is 2813207. The next prime is 2813227. The reversal of 2813218 is 8123182.

2813218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 833569 = 1407^2 + 913^2 .

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 2813192 and 2813201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703303 + ... + 703306.

2^2813218 is an apocalyptic number.

2813218 is a deficient number, since it is larger than the sum of its proper divisors (1406612).

2813218 is a wasteful number, since it uses less digits than its factorization.

2813218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406611.

The product of its digits is 768, while the sum is 25.

The square root of 2813218 is about 1677.2650357054. The cubic root of 2813218 is about 141.1674151123.

The spelling of 2813218 in words is "two million, eight hundred thirteen thousand, two hundred eighteen".