28808683 has 4 divisors (see below), whose sum is σ = 28890648. Its totient is φ = 28726720.

The previous prime is 28808671. The next prime is 28808699. The reversal of 28808683 is 38680882.

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 28808683 - 2⁵ = 28808651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28808623) 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, 40453 + ... + 41158.

It is an arithmetic number, because the mean of its divisors is an integer number (7222662).

Almost surely, 2^28808683 is an apocalyptic number.

28808683 is a deficient number, since it is larger than the sum of its proper divisors (81965).

28808683 is an equidigital number, since it uses as much as digits as its factorization.

28808683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81964.

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 28808683 is about 5367.3720757928. The cubic root of 28808683 is about 306.5545747918.

The spelling of 28808683 in words is "twenty-eight million, eight hundred eight thousand, six hundred eighty-three".