28835251 has 4 divisors (see below), whose sum is σ = 29829600. Its totient is φ = 27840904.

The previous prime is 28835221. The next prime is 28835263. The reversal of 28835251 is 15253882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28835251 - 2¹⁵ = 28802483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28835221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497131 + ... + 497188.

It is an arithmetic number, because the mean of its divisors is an integer number (7457400).

Almost surely, 2^28835251 is an apocalyptic number.

28835251 is a deficient number, since it is larger than the sum of its proper divisors (994349).

28835251 is an equidigital number, since it uses as much as digits as its factorization.

28835251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994348.

The product of its digits is 19200, while the sum is 34.

The square root of 28835251 is about 5369.8464596299. The cubic root of 28835251 is about 306.6487829573.

The spelling of 28835251 in words is "twenty-eight million, eight hundred thirty-five thousand, two hundred fifty-one".