Base | Representation |
---|---|
bin | 110001101000… |
… | …101110110111 |
3 | 220111001222001 |
4 | 301220232313 |
5 | 11312340040 |
6 | 1142520131 |
7 | 215412361 |
oct | 61505667 |
9 | 26431861 |
10 | 13011895 |
11 | 7388036 |
12 | 4436047 |
13 | 2907760 |
14 | 1a29d31 |
15 | 122059a |
hex | c68bb7 |
13011895 has 8 divisors (see below), whose sum is σ = 16815456. Its totient is φ = 9608736.
The previous prime is 13011893. The next prime is 13011917. The reversal of 13011895 is 59811031.
13011895 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
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 13011895 - 21 = 13011893 is a prime.
It is a super-2 number, since 2×130118952 = 338618822982050, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13011893) 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, 100027 + ... + 100156.
It is an arithmetic number, because the mean of its divisors is an integer number (2101932).
Almost surely, 213011895 is an apocalyptic number.
13011895 is a deficient number, since it is larger than the sum of its proper divisors (3803561).
13011895 is a wasteful number, since it uses less digits than its factorization.
13011895 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 200201.
The product of its (nonzero) digits is 1080, while the sum is 28.
The square root of 13011895 is about 3607.2004380128. The cubic root of 13011895 is about 235.2051626179.
The spelling of 13011895 in words is "thirteen million, eleven thousand, eight hundred ninety-five".
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