Base | Representation |
---|---|
bin | 101110000101… |
… | …010111101101 |
3 | 211201202111102 |
4 | 232011113231 |
5 | 11043034441 |
6 | 1110532445 |
7 | 204453320 |
oct | 56052755 |
9 | 24652442 |
10 | 12080621 |
11 | 6901393 |
12 | 4067125 |
13 | 266c8c7 |
14 | 18667b7 |
15 | 10d969b |
hex | b855ed |
12080621 has 12 divisors (see below), whose sum is σ = 14046048. Its totient is φ = 10177272.
The previous prime is 12080603. The next prime is 12080641. The reversal of 12080621 is 12608021.
It is a de Polignac number, because none of the positive numbers 2k-12080621 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12080593 and 12080602.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12080641) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95060 + ... + 95186.
It is an arithmetic number, because the mean of its divisors is an integer number (1170504).
Almost surely, 212080621 is an apocalyptic number.
It is an amenable number.
12080621 is a deficient number, since it is larger than the sum of its proper divisors (1965427).
12080621 is an equidigital number, since it uses as much as digits as its factorization.
12080621 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 368 (or 241 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 20.
The square root of 12080621 is about 3475.7187745846. The cubic root of 12080621 is about 229.4544157245.
Adding to 12080621 its reverse (12608021), we get a palindrome (24688642).
The spelling of 12080621 in words is "twelve million, eighty thousand, six hundred twenty-one".
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