Base | Representation |
---|---|
bin | 11010011111111100… |
… | …110110100001001100 |
3 | 2201102221222002012200 |
4 | 122133330312201030 |
5 | 431233023124233 |
6 | 21023221401500 |
7 | 2025046224546 |
oct | 323774664114 |
9 | 81387862180 |
10 | 28453333068 |
11 | 1108118a2a6 |
12 | 5620b69290 |
13 | 28b5b13874 |
14 | 153cc78696 |
15 | b17e62313 |
hex | 69ff3684c |
28453333068 has 36 divisors (see below), whose sum is σ = 71933381520. Its totient is φ = 9483168096.
The previous prime is 28453333061. The next prime is 28453333081. The reversal of 28453333068 is 86033335482.
28453333068 is a `hidden beast` number, since 2 + 8 + 4 + 5 + 333 + 306 + 8 = 666.
It is a tau number, because it is divible by the number of its divisors (36).
It is not an unprimeable number, because it can be changed into a prime (28453333061) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240246 + ... + 338562.
Almost surely, 228453333068 is an apocalyptic number.
It is an amenable number.
28453333068 is an abundant number, since it is smaller than the sum of its proper divisors (43480048452).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28453333068 is a wasteful number, since it uses less digits than its factorization.
28453333068 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 106366 (or 106361 counting only the distinct ones).
The product of its (nonzero) digits is 1244160, while the sum is 45.
The spelling of 28453333068 in words is "twenty-eight billion, four hundred fifty-three million, three hundred thirty-three thousand, sixty-eight".
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