28082347 has 4 divisors (see below), whose sum is σ = 28092960. Its totient is φ = 28071736.

The previous prime is 28082293. The next prime is 28082357. The reversal of 28082347 is 74328082.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28082347 - 2¹⁵ = 28049579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28082357) 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 3 ways as a sum of consecutive naturals, for example, 2253 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (7023240).

Almost surely, 2^28082347 is an apocalyptic number.

28082347 is a deficient number, since it is larger than the sum of its proper divisors (10613).

28082347 is an equidigital number, since it uses as much as digits as its factorization.

28082347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10612.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 28082347 is about 5299.2779696861. The cubic root of 28082347 is about 303.9562891620.

The spelling of 28082347 in words is "twenty-eight million, eighty-two thousand, three hundred forty-seven".