Search a number
-
+
28675 = 523137
BaseRepresentation
bin111000000000011
31110100001
413000003
51404200
6340431
7146413
oct70003
943301
1028675
111a5a9
1214717
131008a
14a643
15876a
hex7003

28675 has 12 divisors (see below), whose sum is σ = 37696. Its totient is φ = 21600.

The previous prime is 28669. The next prime is 28687. The reversal of 28675 is 57682.

It can be divided in two parts, 286 and 75, that added together give a square (361 = 192).

It is not a de Polignac number, because 28675 - 25 = 28643 is a prime.

It is a nialpdrome in base 14.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 757 + ... + 793.

228675 is an apocalyptic number.

28675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28675 is a deficient number, since it is larger than the sum of its proper divisors (9021).

28675 is a wasteful number, since it uses less digits than its factorization.

28675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 73 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 28675 is about 169.3369422188. The cubic root of 28675 is about 30.6079663710.

The spelling of 28675 in words is "twenty-eight thousand, six hundred seventy-five".

Divisors: 1 5 25 31 37 155 185 775 925 1147 5735 28675