Base | Representation |
---|---|
bin | 11010011001010010… |
… | …001100101101100101 |
3 | 2201011011111210021201 |
4 | 122121102030231211 |
5 | 431020410112420 |
6 | 21004144242501 |
7 | 2022220451212 |
oct | 323122145545 |
9 | 81134453251 |
10 | 28341488485 |
11 | 11024038862 |
12 | 55ab610431 |
13 | 28988b3a3b |
14 | 152c082b09 |
15 | b0d21d10a |
hex | 69948cb65 |
28341488485 has 4 divisors (see below), whose sum is σ = 34009786188. Its totient is φ = 22673190784.
The previous prime is 28341488437. The next prime is 28341488489. The reversal of 28341488485 is 58488414382.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58488414382 = 2 ⋅29244207191.
It can be written as a sum of positive squares in 2 ways, for example, as 11353754916 + 16987733569 = 106554^2 + 130337^2 .
It is a cyclic number.
It is not a de Polignac number, because 28341488485 - 29 = 28341487973 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 (28341488489) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834148844 + ... + 2834148853.
It is an arithmetic number, because the mean of its divisors is an integer number (8502446547).
Almost surely, 228341488485 is an apocalyptic number.
It is an amenable number.
28341488485 is a deficient number, since it is larger than the sum of its proper divisors (5668297703).
28341488485 is an equidigital number, since it uses as much as digits as its factorization.
28341488485 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5668297702.
The product of its digits is 7864320, while the sum is 55.
The spelling of 28341488485 in words is "twenty-eight billion, three hundred forty-one million, four hundred eighty-eight thousand, four hundred eighty-five".
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