28819773 has 16 divisors (see below), whose sum is σ = 42853440. Its totient is φ = 19142352.

The previous prime is 28819741. The next prime is 28819783. The reversal of 28819773 is 37791882.

It is not a de Polignac number, because 28819773 - 2⁵ = 28819741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28819733) 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, 6090 + ... + 9732.

It is an arithmetic number, because the mean of its divisors is an integer number (2678340).

Almost surely, 2^28819773 is an apocalyptic number.

It is an amenable number.

28819773 is a deficient number, since it is larger than the sum of its proper divisors (14033667).

28819773 is a wasteful number, since it uses less digits than its factorization.

28819773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945 (or 3939 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 28819773 is about 5368.4050704096. The cubic root of 28819773 is about 306.5939061522.

It can be divided in two parts, 28819 and 773, that added together give a palindrome (29592).

The spelling of 28819773 in words is "twenty-eight million, eight hundred nineteen thousand, seven hundred seventy-three".