Base | Representation |
---|---|
bin | 101111101010… |
… | …110001110111 |
3 | 212111212021111 |
4 | 233222301313 |
5 | 11144332431 |
6 | 1123455451 |
7 | 211133314 |
oct | 57526167 |
9 | 25455244 |
10 | 12495991 |
11 | 7065472 |
12 | 4227587 |
13 | 27869a1 |
14 | 1933d0b |
15 | 116c7b1 |
hex | beac77 |
12495991 has 2 divisors, whose sum is σ = 12495992. Its totient is φ = 12495990.
The previous prime is 12495971. The next prime is 12496027. The reversal of 12495991 is 19959421.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12495991 - 213 = 12487799 is a prime.
It is a super-2 number, since 2×124959912 = 312299582144162, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12495941) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6247995 + 6247996.
It is an arithmetic number, because the mean of its divisors is an integer number (6247996).
Almost surely, 212495991 is an apocalyptic number.
12495991 is a deficient number, since it is larger than the sum of its proper divisors (1).
12495991 is an equidigital number, since it uses as much as digits as its factorization.
12495991 is an evil number, because the sum of its binary digits is even.
The product of its digits is 29160, while the sum is 40.
The square root of 12495991 is about 3534.9669022496. The cubic root of 12495991 is about 232.0546281882.
The spelling of 12495991 in words is "twelve million, four hundred ninety-five thousand, nine hundred ninety-one".
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