28286959 has 4 divisors (see below), whose sum is σ = 28604880. Its totient is φ = 27969040.

The previous prime is 28286957. The next prime is 28286971. The reversal of 28286959 is 95968282.

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 28286959 - 2¹ = 28286957 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 (28286957) 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, 158827 + ... + 159004.

It is an arithmetic number, because the mean of its divisors is an integer number (7151220).

Almost surely, 2^28286959 is an apocalyptic number.

28286959 is a deficient number, since it is larger than the sum of its proper divisors (317921).

28286959 is an equidigital number, since it uses as much as digits as its factorization.

28286959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317920.

The product of its digits is 622080, while the sum is 49.

The square root of 28286959 is about 5318.5485802049. The cubic root of 28286959 is about 304.6927264622.

The spelling of 28286959 in words is "twenty-eight million, two hundred eighty-six thousand, nine hundred fifty-nine".