Base | Representation |
---|---|
bin | 110001010000… |
… | …000011000111 |
3 | 220021221021110 |
4 | 301100003013 |
5 | 11301121131 |
6 | 1140420103 |
7 | 214511535 |
oct | 61200307 |
9 | 26257243 |
10 | 12910791 |
11 | 7319083 |
12 | 43a7633 |
13 | 28a072a |
14 | 1a01155 |
15 | 1200646 |
hex | c500c7 |
12910791 has 8 divisors (see below), whose sum is σ = 17290480. Its totient is φ = 8569152.
The previous prime is 12910757. The next prime is 12910801. The reversal of 12910791 is 19701921.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12910791 - 29 = 12910279 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12910721) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8710 + ... + 10083.
It is an arithmetic number, because the mean of its divisors is an integer number (2161310).
Almost surely, 212910791 is an apocalyptic number.
12910791 is a deficient number, since it is larger than the sum of its proper divisors (4379689).
12910791 is a wasteful number, since it uses less digits than its factorization.
12910791 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19025.
The product of its (nonzero) digits is 1134, while the sum is 30.
The square root of 12910791 is about 3593.1589166081. The cubic root of 12910791 is about 234.5943870761.
Adding to 12910791 its sum of digits (30), we get a triangular number (12910821 = T5081).
The spelling of 12910791 in words is "twelve million, nine hundred ten thousand, seven hundred ninety-one".
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