28852813 has 12 divisors (see below), whose sum is σ = 32196640. Its totient is φ = 25831080.

The previous prime is 28852801. The next prime is 28852841. The reversal of 28852813 is 31825882.

It is a de Polignac number, because none of the positive numbers 2^k-28852813 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28852913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6328 + ... + 9886.

Almost surely, 2^28852813 is an apocalyptic number.

It is an amenable number.

28852813 is a deficient number, since it is larger than the sum of its proper divisors (3343827).

28852813 is a wasteful number, since it uses less digits than its factorization.

28852813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648 (or 3637 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 28852813 is about 5371.4814530072. The cubic root of 28852813 is about 306.7110247481.

The spelling of 28852813 in words is "twenty-eight million, eight hundred fifty-two thousand, eight hundred thirteen".