Base | Representation |
---|---|
bin | 101111011010… |
… | …101010110101 |
3 | 212101111202120 |
4 | 233122222311 |
5 | 11140230010 |
6 | 1122230153 |
7 | 210440040 |
oct | 57325265 |
9 | 25344676 |
10 | 12430005 |
11 | 701a935 |
12 | 41b5359 |
13 | 2762943 |
14 | 1917c57 |
15 | 1157e70 |
hex | bdaab5 |
12430005 has 32 divisors (see below), whose sum is σ = 23721984. Its totient is φ = 5434176.
The previous prime is 12430003. The next prime is 12430021. The reversal of 12430005 is 50003421.
It is not a de Polignac number, because 12430005 - 21 = 12430003 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 (12430001) 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, 159 + ... + 4988.
It is an arithmetic number, because the mean of its divisors is an integer number (741312).
Almost surely, 212430005 is an apocalyptic number.
12430005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12430005 is a deficient number, since it is larger than the sum of its proper divisors (11291979).
12430005 is a wasteful number, since it uses less digits than its factorization.
12430005 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5185.
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 12430005 is about 3525.6212218558. The cubic root of 12430005 is about 231.6454465896.
Adding to 12430005 its reverse (50003421), we get a palindrome (62433426).
The spelling of 12430005 in words is "twelve million, four hundred thirty thousand, five".
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