28458959 has 4 divisors (see below), whose sum is σ = 28470816. Its totient is φ = 28447104.

The previous prime is 28458953. The next prime is 28458973. The reversal of 28458959 is 95985482.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 95985482 = 2 ⋅47992741.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28458959 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 (28458953) 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, 914 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (7117704).

Almost surely, 2^28458959 is an apocalyptic number.

28458959 is a deficient number, since it is larger than the sum of its proper divisors (11857).

28458959 is an equidigital number, since it uses as much as digits as its factorization.

28458959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11856.

The product of its digits is 1036800, while the sum is 50.

The square root of 28458959 is about 5334.6938993723. The cubic root of 28458959 is about 305.3090444512.

The spelling of 28458959 in words is "twenty-eight million, four hundred fifty-eight thousand, nine hundred fifty-nine".