28869283 has 4 divisors (see below), whose sum is σ = 28911168. Its totient is φ = 28827400.

The previous prime is 28869271. The next prime is 28869293. The reversal of 28869283 is 38296882.

It is a happy number.

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 28869283 - 2²¹ = 26772131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28869223) 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, 19891 + ... + 21292.

It is an arithmetic number, because the mean of its divisors is an integer number (7227792).

Almost surely, 2^28869283 is an apocalyptic number.

28869283 is a deficient number, since it is larger than the sum of its proper divisors (41885).

28869283 is an equidigital number, since it uses as much as digits as its factorization.

28869283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41884.

The product of its digits is 331776, while the sum is 46.

The square root of 28869283 is about 5373.0143308947. The cubic root of 28869283 is about 306.7693734170.

The spelling of 28869283 in words is "twenty-eight million, eight hundred sixty-nine thousand, two hundred eighty-three".