28562 has 4 divisors (see below), whose sum is σ = 42846. Its totient is φ = 14280.

The previous prime is 28559. The next prime is 28571. The reversal of 28562 is 26582.

It is a happy number.

28562 is nontrivially palindromic in base 13.

It is a Cunningham number, because it is equal to 13⁴+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26582 = 2 ⋅13291.

It can be written as a sum of positive squares in only one way, i.e., 28561 + 1 = 169^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7139 + ... + 7142.

2²⁸⁵⁶² is an apocalyptic number.

28562 is a deficient number, since it is larger than the sum of its proper divisors (14284).

28562 is a wasteful number, since it uses less digits than its factorization.

28562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14283.

The product of its digits is 960, while the sum is 23.

The square root of 28562 is about 169.0029585540. The cubic root of 28562 is about 30.5677076855.

The spelling of 28562 in words is "twenty-eight thousand, five hundred sixty-two".