Base | Representation |
---|---|
bin | 110001111111… |
… | …011010101101 |
3 | 220122210102110 |
4 | 301333122231 |
5 | 11323323223 |
6 | 1144514233 |
7 | 216250311 |
oct | 61773255 |
9 | 26583373 |
10 | 13104813 |
11 | 7440927 |
12 | 447b979 |
13 | 293ab37 |
14 | 1a51b41 |
15 | 123cd93 |
hex | c7f6ad |
13104813 has 16 divisors (see below), whose sum is σ = 18699200. Its totient is φ = 8138880.
The previous prime is 13104803. The next prime is 13104823. The reversal of 13104813 is 31840131.
It is an interprime number because it is at equal distance from previous prime (13104803) and next prime (13104823).
It is not a de Polignac number, because 13104813 - 28 = 13104557 is a prime.
It is a super-2 number, since 2×131048132 = 343472247529938, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 13104813.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13104803) 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, 1593 + ... + 5361.
It is an arithmetic number, because the mean of its divisors is an integer number (1168700).
Almost surely, 213104813 is an apocalyptic number.
It is an amenable number.
13104813 is a deficient number, since it is larger than the sum of its proper divisors (5594387).
13104813 is a wasteful number, since it uses less digits than its factorization.
13104813 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3852.
The product of its (nonzero) digits is 288, while the sum is 21.
The square root of 13104813 is about 3620.0570437494. The cubic root of 13104813 is about 235.7637022459.
Adding to 13104813 its reverse (31840131), we get a palindrome (44944944).
The spelling of 13104813 in words is "thirteen million, one hundred four thousand, eight hundred thirteen".
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