28889283 has 4 divisors (see below), whose sum is σ = 38519048. Its totient is φ = 19259520.

The previous prime is 28889281. The next prime is 28889309. The reversal of 28889283 is 38298882.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28889283 - 2¹ = 28889281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28889281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4814878 + ... + 4814883.

It is an arithmetic number, because the mean of its divisors is an integer number (9629762).

Almost surely, 2^28889283 is an apocalyptic number.

28889283 is a deficient number, since it is larger than the sum of its proper divisors (9629765).

28889283 is an equidigital number, since it uses as much as digits as its factorization.

28889283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9629764.

The product of its digits is 442368, while the sum is 48.

The square root of 28889283 is about 5374.8751613410. The cubic root of 28889283 is about 306.8401980740.

The spelling of 28889283 in words is "twenty-eight million, eight hundred eighty-nine thousand, two hundred eighty-three".