Base | Representation |
---|---|
bin | 110011011011… |
… | …010011100001 |
3 | 221100220201011 |
4 | 303123103201 |
5 | 11422344220 |
6 | 1200540521 |
7 | 222405514 |
oct | 63332341 |
9 | 27326634 |
10 | 13481185 |
11 | 7678683 |
12 | 4621741 |
13 | 2a40243 |
14 | 1b0cd7b |
15 | 12b465a |
hex | cdb4e1 |
13481185 has 8 divisors (see below), whose sum is σ = 16206120. Its totient is φ = 10765824.
The previous prime is 13481173. The next prime is 13481189. The reversal of 13481185 is 58118431.
13481185 is digitally balanced in base 3, 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 571536 + 12909649 = 756^2 + 3593^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13481185 - 215 = 13448417 is a prime.
It is not an unprimeable number, because it can be changed into a prime (13481189) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201 + ... + 5329.
It is an arithmetic number, because the mean of its divisors is an integer number (2025765).
Almost surely, 213481185 is an apocalyptic number.
It is an amenable number.
13481185 is a deficient number, since it is larger than the sum of its proper divisors (2724935).
13481185 is an equidigital number, since it uses as much as digits as its factorization.
13481185 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4787.
The product of its digits is 3840, while the sum is 31.
The square root of 13481185 is about 3671.6733242488. The cubic root of 13481185 is about 237.9994880294. Note that the first 3 decimals are identical.
The spelling of 13481185 in words is "thirteen million, four hundred eighty-one thousand, one hundred eighty-five".
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