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28300 = 2252283
BaseRepresentation
bin110111010001100
31102211011
412322030
51401200
6335004
7145336
oct67214
942734
1028300
111a298
1214464
13cb5c
14a456
1585ba
hex6e8c

28300 has 18 divisors (see below), whose sum is σ = 61628. Its totient is φ = 11280.

The previous prime is 28297. The next prime is 28307. The reversal of 28300 is 382.

It is not an unprimeable number, because it can be changed into a prime (28307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42 + ... + 241.

228300 is an apocalyptic number.

28300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28300 is an abundant number, since it is smaller than the sum of its proper divisors (33328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28300 is a wasteful number, since it uses less digits than its factorization.

28300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 28300 is about 168.2260384126. The cubic root of 28300 is about 30.4739542940.

Adding to 28300 its reverse (382), we get a palindrome (28682).

The spelling of 28300 in words is "twenty-eight thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 283 566 1132 1415 2830 5660 7075 14150 28300