Base | Representation |
---|---|
bin | 111011111111001… |
… | …0000010011000001 |
3 | 12012021110021000201 |
4 | 1313332100103001 |
5 | 13110234332020 |
6 | 531421245201 |
7 | 100610406010 |
oct | 16776202301 |
9 | 5167407021 |
10 | 2012808385 |
11 | 9431a5805 |
12 | 482103801 |
13 | 2610102a3 |
14 | 151470a77 |
15 | bba92a0a |
hex | 77f904c1 |
2012808385 has 16 divisors (see below), whose sum is σ = 2774304000. Its totient is φ = 1373270976.
The previous prime is 2012808383. The next prime is 2012808397. The reversal of 2012808385 is 5838082102.
It is not a de Polignac number, because 2012808385 - 21 = 2012808383 is a prime.
It is not an unprimeable number, because it can be changed into a prime (2012808383) 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, 137530 + ... + 151459.
It is an arithmetic number, because the mean of its divisors is an integer number (173394000).
Almost surely, 22012808385 is an apocalyptic number.
It is an amenable number.
2012808385 is a deficient number, since it is larger than the sum of its proper divisors (761495615).
2012808385 is a wasteful number, since it uses less digits than its factorization.
2012808385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 289200.
The product of its (nonzero) digits is 30720, while the sum is 37.
The square root of 2012808385 is about 44864.3331054859. Note that the first 3 decimals coincide. The cubic root of 2012808385 is about 1262.6049209930.
The spelling of 2012808385 in words is "two billion, twelve million, eight hundred eight thousand, three hundred eighty-five".
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