4428783 has 16 divisors (see below), whose sum is σ = 6671200. Its totient is φ = 2903040.

The previous prime is 4428773. The next prime is 4428817. The reversal of 4428783 is 3878244.

It is not a de Polignac number, because 4428783 - 2⁵ = 4428751 is a prime.

It is a super-2 number, since 2×4428783² = 39228237722178, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

4428783 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428703) 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, 303 + ... + 2991.

It is an arithmetic number, because the mean of its divisors is an integer number (416950).

Almost surely, 2^4428783 is an apocalyptic number.

4428783 is a deficient number, since it is larger than the sum of its proper divisors (2242417).

4428783 is a wasteful number, since it uses less digits than its factorization.

4428783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2753 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 4428783 is about 2104.4673910517. The cubic root of 4428783 is about 164.2207887836.

The spelling of 4428783 in words is "four million, four hundred twenty-eight thousand, seven hundred eighty-three".