Base | Representation |
---|---|
bin | 110010101010… |
… | …010011100101 |
3 | 220222201101211 |
4 | 302222103211 |
5 | 11344433420 |
6 | 1152351421 |
7 | 220611421 |
oct | 62522345 |
9 | 26881354 |
10 | 13280485 |
11 | 7550909 |
12 | 4545571 |
13 | 299ca9a |
14 | 1a99b81 |
15 | 1274e5a |
hex | caa4e5 |
13280485 has 8 divisors (see below), whose sum is σ = 16874136. Its totient is φ = 9999360.
The previous prime is 13280483. The next prime is 13280489. The reversal of 13280485 is 58408231.
13280485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 81796 + 13198689 = 286^2 + 3633^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13280485 - 21 = 13280483 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13280483) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78036 + ... + 78205.
It is an arithmetic number, because the mean of its divisors is an integer number (2109267).
Almost surely, 213280485 is an apocalyptic number.
It is an amenable number.
13280485 is a deficient number, since it is larger than the sum of its proper divisors (3593651).
13280485 is a wasteful number, since it uses less digits than its factorization.
13280485 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 156263.
The product of its (nonzero) digits is 7680, while the sum is 31.
The square root of 13280485 is about 3644.2399756328. The cubic root of 13280485 is about 236.8125123216.
The spelling of 13280485 in words is "thirteen million, two hundred eighty thousand, four hundred eighty-five".
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