Base | Representation |
---|---|
bin | 110010101010… |
… | …010100001101 |
3 | 220222201110022 |
4 | 302222110031 |
5 | 11344434100 |
6 | 1152351525 |
7 | 220611506 |
oct | 62522415 |
9 | 26881408 |
10 | 13280525 |
11 | 7550945 |
12 | 45455a5 |
13 | 299cacb |
14 | 1a99bad |
15 | 1274e85 |
hex | caa50d |
13280525 has 24 divisors (see below), whose sum is σ = 17617920. Its totient is φ = 9901440.
The previous prime is 13280503. The next prime is 13280573. The reversal of 13280525 is 52508231.
It is not a de Polignac number, because 13280525 - 212 = 13276429 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 13280494 and 13280503.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34484 + ... + 34866.
It is an arithmetic number, because the mean of its divisors is an integer number (734080).
Almost surely, 213280525 is an apocalyptic number.
It is an amenable number.
13280525 is a deficient number, since it is larger than the sum of its proper divisors (4337395).
13280525 is a wasteful number, since it uses less digits than its factorization.
13280525 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 485 (or 480 counting only the distinct ones).
The product of its (nonzero) digits is 2400, while the sum is 26.
The square root of 13280525 is about 3644.2454637414. The cubic root of 13280525 is about 236.8127500763.
Adding to 13280525 its reverse (52508231), we get a palindrome (65788756).
The spelling of 13280525 in words is "thirteen million, two hundred eighty thousand, five hundred twenty-five".
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