Base | Representation |
---|---|
bin | 111101010011101… |
… | …001010101010000 |
3 | 2122200102021100112 |
4 | 331103221111100 |
5 | 4101302411313 |
6 | 250021340452 |
7 | 34326421544 |
oct | 7523512520 |
9 | 2580367315 |
10 | 1028560208 |
11 | 488660565 |
12 | 248567728 |
13 | 135129a10 |
14 | 9a863a24 |
15 | 604738a8 |
hex | 3d4e9550 |
1028560208 has 20 divisors (see below), whose sum is σ = 2146130868. Its totient is φ = 474720000.
The previous prime is 1028560201. The next prime is 1028560219. The reversal of 1028560208 is 8020658201.
1028560208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 200732224 + 827827984 = 14168^2 + 28772^2 .
It is a super-2 number, since 2×10285602082 = 2115872202962006528, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1028560201) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2472293 + ... + 2472708.
Almost surely, 21028560208 is an apocalyptic number.
It is an amenable number.
1028560208 is an abundant number, since it is smaller than the sum of its proper divisors (1117570660).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1028560208 is a wasteful number, since it uses less digits than its factorization.
1028560208 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4945022 (or 4945016 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 32.
The square root of 1028560208 is about 32071.1740976223. The cubic root of 1028560208 is about 1009.4308488276.
The spelling of 1028560208 in words is "one billion, twenty-eight million, five hundred sixty thousand, two hundred eight".
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