Base | Representation |
---|---|
bin | 11010010010111011… |
… | …011001101010010011 |
3 | 2200212201211221022000 |
4 | 122102323121222103 |
5 | 430311110131130 |
6 | 20545414445043 |
7 | 2016454153530 |
oct | 322273315223 |
9 | 80781757260 |
10 | 28234848915 |
11 | 10a79921989 |
12 | 557b963783 |
13 | 287c7870c0 |
14 | 151bc43d87 |
15 | b03ba6260 |
hex | 692ed9a93 |
28234848915 has 128 divisors (see below), whose sum is σ = 62268702720. Its totient is φ = 11820017664.
The previous prime is 28234848869. The next prime is 28234848919. The reversal of 28234848915 is 51984843282.
28234848915 is a `hidden beast` number, since 2 + 82 + 3 + 484 + 89 + 1 + 5 = 666.
It is not a de Polignac number, because 28234848915 - 211 = 28234846867 is a prime.
It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.
It is not an unprimeable number, because it can be changed into a prime (28234848919) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1551147 + ... + 1569243.
It is an arithmetic number, because the mean of its divisors is an integer number (486474240).
Almost surely, 228234848915 is an apocalyptic number.
28234848915 is an abundant number, since it is smaller than the sum of its proper divisors (34033853805).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28234848915 is a wasteful number, since it uses less digits than its factorization.
28234848915 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18258 (or 18252 counting only the distinct ones).
The product of its digits is 4423680, while the sum is 54.
The spelling of 28234848915 in words is "twenty-eight billion, two hundred thirty-four million, eight hundred forty-eight thousand, nine hundred fifteen".
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