28283828 has 6 divisors (see below), whose sum is σ = 49496706. Its totient is φ = 14141912.

The previous prime is 28283807. The next prime is 28283831. The reversal of 28283828 is 82838282.

It can be written as a sum of positive squares in only one way, i.e., 28281124 + 2704 = 5318^2 + 52^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535475 + ... + 3535482.

It is an arithmetic number, because the mean of its divisors is an integer number (8249451).

Almost surely, 2^28283828 is an apocalyptic number.

It is an amenable number.

28283828 is a deficient number, since it is larger than the sum of its proper divisors (21212878).

28283828 is a wasteful number, since it uses less digits than its factorization.

28283828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070961 (or 7070959 counting only the distinct ones).

The product of its digits is 98304, while the sum is 41.

The square root of 28283828 is about 5318.2542248373. The cubic root of 28283828 is about 304.6814842012.

The spelling of 28283828 in words is "twenty-eight million, two hundred eighty-three thousand, eight hundred twenty-eight".