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28476 = 22327113
BaseRepresentation
bin110111100111100
31110001200
412330330
51402401
6335500
7146010
oct67474
943050
1028476
111a438
1214590
13cc66
14a540
158686
hex6f3c

28476 has 36 divisors (see below), whose sum is σ = 82992. Its totient is φ = 8064.

The previous prime is 28463. The next prime is 28477. The reversal of 28476 is 67482.

It is a tau number, because it is divible by the number of its divisors (36).

28476 is an undulating number in base 15.

It is a nialpdrome in base 13 and base 14.

It is a zygodrome in base 6 and base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28476.

It is not an unprimeable number, because it can be changed into a prime (28477) by changing a digit.

28476 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 308.

28476 is a Friedman number, since it can be written as 678*42, using all its digits and the basic arithmetic operations.

228476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41496).

28476 is an abundant number, since it is smaller than the sum of its proper divisors (54516).

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

28476 is a wasteful number, since it uses less digits than its factorization.

28476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 125 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 28476 is about 168.7483333251. The cubic root of 28476 is about 30.5369971174.

The spelling of 28476 in words is "twenty-eight thousand, four hundred seventy-six".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 113 126 226 252 339 452 678 791 1017 1356 1582 2034 2373 3164 4068 4746 7119 9492 14238 28476