2220347 has 4 divisors (see below), whose sum is σ = 2258040. Its totient is φ = 2182656.

The previous prime is 2220331. The next prime is 2220349. The reversal of 2220347 is 7430222.

It is a happy number.

2220347 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, and also an emirpimes, since its reverse is a distinct semiprime: 7430222 = 2 ⋅3715111.

It is a cyclic number.

It is not a de Polignac number, because 2220347 - 2⁴ = 2220331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220349) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 18758 + ... + 18875.

It is an arithmetic number, because the mean of its divisors is an integer number (564510).

2^2220347 is an apocalyptic number.

2220347 is a deficient number, since it is larger than the sum of its proper divisors (37693).

2220347 is an equidigital number, since it uses as much as digits as its factorization.

2220347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37692.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 2220347 is about 1490.0828836008. The cubic root of 2220347 is about 130.4588714753.

Adding to 2220347 its reverse (7430222), we get a palindrome (9650569).

The spelling of 2220347 in words is "two million, two hundred twenty thousand, three hundred forty-seven".