Base | Representation |
---|---|
bin | 110001111110… |
… | …010010101101 |
3 | 220122120002210 |
4 | 301332102231 |
5 | 11323201310 |
6 | 1144441033 |
7 | 216231006 |
oct | 61762255 |
9 | 26576083 |
10 | 13100205 |
11 | 7438418 |
12 | 4479179 |
13 | 2938a01 |
14 | 1a501ad |
15 | 123b820 |
hex | c7e4ad |
13100205 has 16 divisors (see below), whose sum is σ = 21170304. Its totient is φ = 6916800.
The previous prime is 13100189. The next prime is 13100207. The reversal of 13100205 is 50200131.
It is not a de Polignac number, because 13100205 - 24 = 13100189 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13100207) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2809 + ... + 5838.
It is an arithmetic number, because the mean of its divisors is an integer number (1323144).
Almost surely, 213100205 is an apocalyptic number.
13100205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13100205 is a deficient number, since it is larger than the sum of its proper divisors (8070099).
13100205 is a wasteful number, since it uses less digits than its factorization.
13100205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8756.
The product of its (nonzero) digits is 30, while the sum is 12.
The square root of 13100205 is about 3619.4205337319. The cubic root of 13100205 is about 235.7360654150.
Adding to 13100205 its reverse (50200131), we get a palindrome (63300336).
The spelling of 13100205 in words is "thirteen million, one hundred thousand, two hundred five".
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