Base | Representation |
---|---|
bin | 1010101100011011… |
… | …0001101001010001 |
3 | 21102001200122211212 |
4 | 2223012301221101 |
5 | 21334343231040 |
6 | 1152504345505 |
7 | 131065243604 |
oct | 25306615121 |
9 | 7361618755 |
10 | 2870680145 |
11 | 1243473533 |
12 | 681475295 |
13 | 369976508 |
14 | 1d338233b |
15 | 11c04bd65 |
hex | ab1b1a51 |
2870680145 has 4 divisors (see below), whose sum is σ = 3444816180. Its totient is φ = 2296544112.
The previous prime is 2870680139. The next prime is 2870680193. The reversal of 2870680145 is 5410860782.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5410860782 = 2 ⋅2705430391.
It can be written as a sum of positive squares in 2 ways, for example, as 311028496 + 2559651649 = 17636^2 + 50593^2 .
It is a cyclic number.
It is not a de Polignac number, because 2870680145 - 216 = 2870614609 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287068010 + ... + 287068019.
It is an arithmetic number, because the mean of its divisors is an integer number (861204045).
Almost surely, 22870680145 is an apocalyptic number.
It is an amenable number.
2870680145 is a deficient number, since it is larger than the sum of its proper divisors (574136035).
2870680145 is an equidigital number, since it uses as much as digits as its factorization.
2870680145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 574136034.
The product of its (nonzero) digits is 107520, while the sum is 41.
The square root of 2870680145 is about 53578.7284750208. The cubic root of 2870680145 is about 1421.2209536269.
The spelling of 2870680145 in words is "two billion, eight hundred seventy million, six hundred eighty thousand, one hundred forty-five".
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