Base | Representation |
---|---|
bin | 11010001000001101… |
… | …111001011001100101 |
3 | 2200102012201012011111 |
4 | 122020031321121211 |
5 | 424424104220013 |
6 | 20515515105021 |
7 | 2012142552535 |
oct | 321015713145 |
9 | 80365635144 |
10 | 28055148133 |
11 | 10997444041 |
12 | 552b742171 |
13 | 285148948c |
14 | 15020274c5 |
15 | ae300b73d |
hex | 688379665 |
28055148133 has 8 divisors (see below), whose sum is σ = 28410076800. Its totient is φ = 27702445200.
The previous prime is 28055148131. The next prime is 28055148169. The reversal of 28055148133 is 33184155082.
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 28055148133 - 21 = 28055148131 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 (28055148131) 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 7 ways as a sum of consecutive naturals, for example, 531058 + ... + 581491.
It is an arithmetic number, because the mean of its divisors is an integer number (3551259600).
Almost surely, 228055148133 is an apocalyptic number.
It is an amenable number.
28055148133 is a deficient number, since it is larger than the sum of its proper divisors (354928667).
28055148133 is a wasteful number, since it uses less digits than its factorization.
28055148133 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1112867.
The product of its (nonzero) digits is 115200, while the sum is 40.
The spelling of 28055148133 in words is "twenty-eight billion, fifty-five million, one hundred forty-eight thousand, one hundred thirty-three".
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