Base | Representation |
---|---|
bin | 101111101111… |
… | …011100001101 |
3 | 212112211110200 |
4 | 233233130031 |
5 | 11200440320 |
6 | 1124124113 |
7 | 211243062 |
oct | 57573415 |
9 | 25484420 |
10 | 12515085 |
11 | 7078850 |
12 | 4236639 |
13 | 279259b |
14 | 193ac69 |
15 | 1173290 |
hex | bef70d |
12515085 has 48 divisors (see below), whose sum is σ = 23969088. Its totient is φ = 5990400.
The previous prime is 12515081. The next prime is 12515093. The reversal of 12515085 is 58051521.
It is not a de Polignac number, because 12515085 - 22 = 12515081 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12515081) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64749 + ... + 64941.
It is an arithmetic number, because the mean of its divisors is an integer number (499356).
Almost surely, 212515085 is an apocalyptic number.
12515085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12515085 is a deficient number, since it is larger than the sum of its proper divisors (11454003).
12515085 is a wasteful number, since it uses less digits than its factorization.
12515085 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 346 (or 343 counting only the distinct ones).
The product of its (nonzero) digits is 2000, while the sum is 27.
The square root of 12515085 is about 3537.6666038506. Note that the first 4 decimals coincide. The cubic root of 12515085 is about 232.1727619745.
It can be divided in two parts, 1251 and 5085, that added together give a palindrome (6336).
The spelling of 12515085 in words is "twelve million, five hundred fifteen thousand, eighty-five".
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