28928983 has 6 divisors (see below), whose sum is σ = 29893272. Its totient is φ = 27994860.

The previous prime is 28928957. The next prime is 28929023. The reversal of 28928983 is 38982982.

It is not a de Polignac number, because 28928983 - 2¹⁷ = 28797911 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 (28928953) 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 5 ways as a sum of consecutive naturals, for example, 14091 + ... + 16012.

It is an arithmetic number, because the mean of its divisors is an integer number (4982212).

Almost surely, 2^28928983 is an apocalyptic number.

28928983 is a deficient number, since it is larger than the sum of its proper divisors (964289).

28928983 is an equidigital number, since it uses as much as digits as its factorization.

28928983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30165 (or 30134 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 28928983 is about 5378.5670024645. The cubic root of 28928983 is about 306.9806882355.

The spelling of 28928983 in words is "twenty-eight million, nine hundred twenty-eight thousand, nine hundred eighty-three".