Base | Representation |
---|---|
bin | 110001110001… |
… | …100100101101 |
3 | 220112220122022 |
4 | 301301210231 |
5 | 11320014414 |
6 | 1143355525 |
7 | 215623064 |
oct | 61614455 |
9 | 26486568 |
10 | 13048109 |
11 | 7402268 |
12 | 4452ba5 |
13 | 291b099 |
14 | 1a391db |
15 | 122b18e |
hex | c7192d |
13048109 has 4 divisors (see below), whose sum is σ = 13120380. Its totient is φ = 12975840.
The previous prime is 13048103. The next prime is 13048111. The reversal of 13048109 is 90184031.
13048109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 3988009 + 9060100 = 1997^2 + 3010^2 .
It is a cyclic number.
It is not a de Polignac number, because 13048109 - 216 = 12982573 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 (13048103) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35864 + ... + 36225.
It is an arithmetic number, because the mean of its divisors is an integer number (3280095).
Almost surely, 213048109 is an apocalyptic number.
It is an amenable number.
13048109 is a deficient number, since it is larger than the sum of its proper divisors (72271).
13048109 is an equidigital number, since it uses as much as digits as its factorization.
13048109 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 72270.
The product of its (nonzero) digits is 864, while the sum is 26.
The square root of 13048109 is about 3612.2166324848. The cubic root of 13048109 is about 235.4231639143.
The spelling of 13048109 in words is "thirteen million, forty-eight thousand, one hundred nine".
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