4428385 has 16 divisors (see below), whose sum is σ = 5768784. Its totient is φ = 3244032.

The previous prime is 4428383. The next prime is 4428421. The reversal of 4428385 is 5838244.

It can be written as a sum of positive squares in 8 ways, for example, as 833569 + 3594816 = 913^2 + 1896^2 .

It is a cyclic number.

It is not a de Polignac number, because 4428385 - 2¹ = 4428383 is a prime.

It is a super-2 number, since 2×4428385² = 39221187416450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4428385.

It is not an unprimeable number, because it can be changed into a prime (4428383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12369 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (360549).

Almost surely, 2^4428385 is an apocalyptic number.

It is an amenable number.

4428385 is a deficient number, since it is larger than the sum of its proper divisors (1340399).

4428385 is a wasteful number, since it uses less digits than its factorization.

4428385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its digits is 30720, while the sum is 34.

The square root of 4428385 is about 2104.3728281842. The cubic root of 4428385 is about 164.2158693109.

The spelling of 4428385 in words is "four million, four hundred twenty-eight thousand, three hundred eighty-five".