Search a number
28586 = 214293
BaseRepresentation
bin110111110101010
31110012202
412332222
51403321
6340202
7146225
oct67652
943182
1028586
111a528
1214662
131001c
14a5bc
15870b
hex6faa

28586 has 4 divisors (see below), whose sum is σ = 42882. Its totient is φ = 14292.

The previous prime is 28579. The next prime is 28591. The reversal of 28586 is 68582.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 28561 + 25 = 169^2 + 5^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7145 + ... + 7148.

228586 is an apocalyptic number.

28586 is a deficient number, since it is larger than the sum of its proper divisors (14296).

28586 is a wasteful number, since it uses less digits than its factorization.

28586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14295.

The product of its digits is 3840, while the sum is 29.

The square root of 28586 is about 169.0739483185. The cubic root of 28586 is about 30.5762670721.

The spelling of 28586 in words is "twenty-eight thousand, five hundred eighty-six".

Divisors: 1 2 14293 28586