Base | Representation |
---|---|
bin | 11010011111000100… |
… | …101011100010110000 |
3 | 2201101221020222021120 |
4 | 122133010223202300 |
5 | 431220240424143 |
6 | 21021534022240 |
7 | 2024510115504 |
oct | 323704534260 |
9 | 81357228246 |
10 | 28438608048 |
11 | 11073942164 |
12 | 5618047980 |
13 | 28b2a59436 |
14 | 153ad24304 |
15 | b16a04383 |
hex | 69f12b8b0 |
28438608048 has 40 divisors (see below), whose sum is σ = 73572808896. Its totient is φ = 9465806400.
The previous prime is 28438608047. The next prime is 28438608071. The reversal of 28438608048 is 84080683482.
It is not an unprimeable number, because it can be changed into a prime (28438608047) 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, 395538 + ... + 461873.
Almost surely, 228438608048 is an apocalyptic number.
It is an amenable number.
28438608048 is an abundant number, since it is smaller than the sum of its proper divisors (45134200848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28438608048 is a wasteful number, since it uses less digits than its factorization.
28438608048 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 858113 (or 858107 counting only the distinct ones).
The product of its (nonzero) digits is 2359296, while the sum is 51.
The spelling of 28438608048 in words is "twenty-eight billion, four hundred thirty-eight million, six hundred eight thousand, forty-eight".
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