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28682 = 214341
BaseRepresentation
bin111000000001010
31110100022
413000022
51404212
6340442
7146423
oct70012
943308
1028682
111a605
1214722
1310094
14a64a
158772
hex700a

28682 has 4 divisors (see below), whose sum is σ = 43026. Its totient is φ = 14340.

The previous prime is 28669. The next prime is 28687.

28682 is nontrivially palindromic in base 10.

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 + 121 = 169^2 + 11^2 .

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (28687) by changing a digit.

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 as a sum of consecutive naturals, namely, 7169 + ... + 7172.

228682 is an apocalyptic number.

28682 is a deficient number, since it is larger than the sum of its proper divisors (14344).

28682 is a wasteful number, since it uses less digits than its factorization.

28682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14343.

The product of its digits is 1536, while the sum is 26.

The square root of 28682 is about 169.3576098084. The cubic root of 28682 is about 30.6104567905.

The spelling of 28682 in words is "twenty-eight thousand, six hundred eighty-two".

Divisors: 1 2 14341 28682