Base | Representation |
---|---|
bin | 1010100101110000… |
… | …0100100000001101 |
3 | 21100010001112020210 |
4 | 2221130010200031 |
5 | 21310213123411 |
6 | 1150025033033 |
7 | 130305422241 |
oct | 25134044015 |
9 | 7303045223 |
10 | 2842707981 |
11 | 12296a8643 |
12 | 674025779 |
13 | 363c31539 |
14 | 1cd780421 |
15 | 119873ca6 |
hex | a970480d |
2842707981 has 8 divisors (see below), whose sum is σ = 3882723264. Its totient is φ = 1848915680.
The previous prime is 2842707979. The next prime is 2842707997. The reversal of 2842707981 is 1897072482.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2842707981 - 21 = 2842707979 is a prime.
It is a super-2 number, since 2×28427079812 = 16161977330482192722, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 2842707981.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2842707911) 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, 11555601 + ... + 11555846.
It is an arithmetic number, because the mean of its divisors is an integer number (485340408).
Almost surely, 22842707981 is an apocalyptic number.
It is an amenable number.
2842707981 is a deficient number, since it is larger than the sum of its proper divisors (1040015283).
2842707981 is a wasteful number, since it uses less digits than its factorization.
2842707981 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23111491.
The product of its (nonzero) digits is 451584, while the sum is 48.
The square root of 2842707981 is about 53317.0515032480. The cubic root of 2842707981 is about 1416.5897104648.
The spelling of 2842707981 in words is "two billion, eight hundred forty-two million, seven hundred seven thousand, nine hundred eighty-one".
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