Base | Representation |
---|---|
bin | 101101111001… |
… | …000000111111 |
3 | 211122012002010 |
4 | 231321000333 |
5 | 11034430030 |
6 | 1105502303 |
7 | 204152634 |
oct | 55710077 |
9 | 24565063 |
10 | 12030015 |
11 | 6877368 |
12 | 4041993 |
13 | 265286a |
14 | 185218b |
15 | 10c96b0 |
hex | b7903f |
12030015 has 32 divisors (see below), whose sum is σ = 20385792. Its totient is φ = 6048000.
The previous prime is 12029987. The next prime is 12030017. The reversal of 12030015 is 51003021.
12030015 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12030015 - 26 = 12029951 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12030017) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18750 + ... + 19380.
It is an arithmetic number, because the mean of its divisors is an integer number (637056).
Almost surely, 212030015 is an apocalyptic number.
12030015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
12030015 is a deficient number, since it is larger than the sum of its proper divisors (8355777).
12030015 is a wasteful number, since it uses less digits than its factorization.
12030015 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 711.
The product of its (nonzero) digits is 30, while the sum is 12.
The square root of 12030015 is about 3468.4312015665. The cubic root of 12030015 is about 229.1335706843.
Adding to 12030015 its reverse (51003021), we get a palindrome (63033036).
It can be divided in two parts, 120 and 30015, that added together give a triangular number (30135 = T245).
The spelling of 12030015 in words is "twelve million, thirty thousand, fifteen".
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