28917683 has 4 divisors (see below), whose sum is σ = 29699280. Its totient is φ = 28136088.

The previous prime is 28917671. The next prime is 28917703. The reversal of 28917683 is 38671982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38671982 = 2 ⋅19335991.

It is a cyclic number.

It is not a de Polignac number, because 28917683 - 2⁶ = 28917619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28917653) 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, 390743 + ... + 390816.

It is an arithmetic number, because the mean of its divisors is an integer number (7424820).

Almost surely, 2^28917683 is an apocalyptic number.

28917683 is a deficient number, since it is larger than the sum of its proper divisors (781597).

28917683 is an equidigital number, since it uses as much as digits as its factorization.

28917683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781596.

The product of its digits is 145152, while the sum is 44.

The square root of 28917683 is about 5377.5164341915. The cubic root of 28917683 is about 306.9407129446.

The spelling of 28917683 in words is "twenty-eight million, nine hundred seventeen thousand, six hundred eighty-three".