Base | Representation |
---|---|
bin | 101000110101101110100… |
… | …100011010101110001110 |
3 | 100221021222121221211011000 |
4 | 220311232210122232032 |
5 | 331440121440402221 |
6 | 5545135055441130 |
7 | 406521624135102 |
oct | 50655644325616 |
9 | 10837877854130 |
10 | 2806468684686 |
11 | 992242454087 |
12 | 393ab48261a6 |
13 | 174858719004 |
14 | 99b95d87902 |
15 | 4d009136e26 |
hex | 28d6e91ab8e |
2806468684686 has 32 divisors (see below), whose sum is σ = 6236675988480. Its totient is φ = 935477724888.
The previous prime is 2806468684637. The next prime is 2806468684687. The reversal of 2806468684686 is 6864868646082.
2806468684686 is a `hidden beast` number, since 2 + 8 + 0 + 6 + 468 + 6 + 84 + 6 + 86 = 666.
It is a super-4 number, since 4×28064686846864 (a number of 51 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2806468684687) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4677955 + ... + 5243681.
It is an arithmetic number, because the mean of its divisors is an integer number (194896124640).
Almost surely, 22806468684686 is an apocalyptic number.
2806468684686 is an abundant number, since it is smaller than the sum of its proper divisors (3430207303794).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2806468684686 is a wasteful number, since it uses less digits than its factorization.
2806468684686 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 657605 (or 657599 counting only the distinct ones).
The product of its (nonzero) digits is 1019215872, while the sum is 72.
The spelling of 2806468684686 in words is "two trillion, eight hundred six billion, four hundred sixty-eight million, six hundred eighty-four thousand, six hundred eighty-six".
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