Base | Representation |
---|---|
bin | 110001100110… |
… | …110110101101 |
3 | 220110200102020 |
4 | 301212312231 |
5 | 11312113310 |
6 | 1142420353 |
7 | 215351064 |
oct | 61466655 |
9 | 26420366 |
10 | 13004205 |
11 | 7382285 |
12 | 44316b9 |
13 | 29040c6 |
14 | 1a271db |
15 | 121d170 |
hex | c66dad |
13004205 has 16 divisors (see below), whose sum is σ = 21369984. Its totient is φ = 6747840.
The previous prime is 13004203. The next prime is 13004207. The reversal of 13004205 is 50240031.
It is an interprime number because it is at equal distance from previous prime (13004203) and next prime (13004207).
It is not a de Polignac number, because 13004205 - 21 = 13004203 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13004203) 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, 11161 + ... + 12270.
It is an arithmetic number, because the mean of its divisors is an integer number (1335624).
Almost surely, 213004205 is an apocalyptic number.
13004205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13004205 is a deficient number, since it is larger than the sum of its proper divisors (8365779).
13004205 is a wasteful number, since it uses less digits than its factorization.
13004205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23476.
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 13004205 is about 3606.1343568980. The cubic root of 13004205 is about 235.1588182503.
Adding to 13004205 its reverse (50240031), we get a palindrome (63244236).
The spelling of 13004205 in words is "thirteen million, four thousand, two hundred five".
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