28828027 has 4 divisors (see below), whose sum is σ = 28903680. Its totient is φ = 28752376.

The previous prime is 28828021. The next prime is 28828031. The reversal of 28828027 is 72082882.

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 28828027 - 2¹⁵ = 28795259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28828021) 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 3 ways as a sum of consecutive naturals, for example, 37252 + ... + 38017.

It is an arithmetic number, because the mean of its divisors is an integer number (7225920).

Almost surely, 2^28828027 is an apocalyptic number.

28828027 is a deficient number, since it is larger than the sum of its proper divisors (75653).

28828027 is an equidigital number, since it uses as much as digits as its factorization.

28828027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75652.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 28828027 is about 5369.1737725650. The cubic root of 28828027 is about 306.6231729170.

The spelling of 28828027 in words is "twenty-eight million, eight hundred twenty-eight thousand, twenty-seven".