28828255 has 8 divisors (see below), whose sum is σ = 34634592. Its totient is φ = 23035488.

The previous prime is 28828231. The next prime is 28828259. The reversal of 28828255 is 55282882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28828255 - 2¹¹ = 28826207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28828259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (4329324).

Almost surely, 2^28828255 is an apocalyptic number.

28828255 is a deficient number, since it is larger than the sum of its proper divisors (5806337).

28828255 is an equidigital number, since it uses as much as digits as its factorization.

28828255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785.

The product of its digits is 102400, while the sum is 40.

The square root of 28828255 is about 5369.1950048401. The cubic root of 28828255 is about 306.6239812727.

The spelling of 28828255 in words is "twenty-eight million, eight hundred twenty-eight thousand, two hundred fifty-five".