4228643 has 4 divisors (see below), whose sum is σ = 4234680. Its totient is φ = 4222608.

The previous prime is 4228613. The next prime is 4228649. The reversal of 4228643 is 3468224.

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

It is a cyclic number.

It is not a de Polignac number, because 4228643 - 2⁸ = 4228387 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4² + 2³ + 2¹⁵ + 8 + 6⁴ + 4¹¹ + 3⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4228649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805 + ... + 3422.

It is an arithmetic number, because the mean of its divisors is an integer number (1058670).

Almost surely, 2^4228643 is an apocalyptic number.

4228643 is a deficient number, since it is larger than the sum of its proper divisors (6037).

4228643 is an equidigital number, since it uses as much as digits as its factorization.

4228643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6036.

The product of its digits is 9216, while the sum is 29.

The square root of 4228643 is about 2056.3664556688. The cubic root of 4228643 is about 161.7088072854.

The spelling of 4228643 in words is "four million, two hundred twenty-eight thousand, six hundred forty-three".