Base | Representation |
---|---|
bin | 110001001000… |
… | …101001010111 |
3 | 220020101200111 |
4 | 301020221113 |
5 | 11244133341 |
6 | 1140023451 |
7 | 214324252 |
oct | 61105127 |
9 | 26211614 |
10 | 12880471 |
11 | 72a831a |
12 | 4391b87 |
13 | 288c9a6 |
14 | 19d4099 |
15 | 11e6681 |
hex | c48a57 |
12880471 has 2 divisors, whose sum is σ = 12880472. Its totient is φ = 12880470.
The previous prime is 12880457. The next prime is 12880487. The reversal of 12880471 is 17408821.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12880471 is a prime.
It is a super-3 number, since 3×128804713 (a number of 22 digits) contains 333 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12880411) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440235 + 6440236.
It is an arithmetic number, because the mean of its divisors is an integer number (6440236).
Almost surely, 212880471 is an apocalyptic number.
12880471 is a deficient number, since it is larger than the sum of its proper divisors (1).
12880471 is an equidigital number, since it uses as much as digits as its factorization.
12880471 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3584, while the sum is 31.
The square root of 12880471 is about 3588.9373078949. The cubic root of 12880471 is about 234.4106008380.
The spelling of 12880471 in words is "twelve million, eight hundred eighty thousand, four hundred seventy-one".
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