28849833 has 24 divisors (see below), whose sum is σ = 44397288. Its totient is φ = 17989632.

The previous prime is 28849829. The next prime is 28849883. The reversal of 28849833 is 33894882.

It can be written as a sum of positive squares in 4 ways, for example, as 11108889 + 17740944 = 3333^2 + 4212^2 .

It is not a de Polignac number, because 28849833 - 2² = 28849829 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28849813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29041 + ... + 30017.

It is an arithmetic number, because the mean of its divisors is an integer number (1849887).

Almost surely, 2^28849833 is an apocalyptic number.

It is an amenable number.

28849833 is a deficient number, since it is larger than the sum of its proper divisors (15547455).

28849833 is a wasteful number, since it uses less digits than its factorization.

28849833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193 (or 1190 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28849833 is about 5371.2040549583. The cubic root of 28849833 is about 306.7004650577.

The spelling of 28849833 in words is "twenty-eight million, eight hundred forty-nine thousand, eight hundred thirty-three".