Base | Representation |
---|---|
bin | 111101010011100… |
… | …001001111101111 |
3 | 2122200100120220211 |
4 | 331103201033233 |
5 | 4101300331322 |
6 | 250020523251 |
7 | 34326223150 |
oct | 7523411757 |
9 | 2580316824 |
10 | 1028527087 |
11 | 488638695 |
12 | 248550527 |
13 | 135117913 |
14 | 9a855927 |
15 | 60468b77 |
hex | 3d4e13ef |
1028527087 has 16 divisors (see below), whose sum is σ = 1243855872. Its totient is φ = 831378240.
The previous prime is 1028527061. The next prime is 1028527091. The reversal of 1028527087 is 7807258201.
It is not a de Polignac number, because 1028527087 - 223 = 1020138479 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1028527987) 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 15 ways as a sum of consecutive naturals, for example, 33558 + ... + 56419.
It is an arithmetic number, because the mean of its divisors is an integer number (77740992).
Almost surely, 21028527087 is an apocalyptic number.
1028527087 is a deficient number, since it is larger than the sum of its proper divisors (215328785).
1028527087 is an equidigital number, since it uses as much as digits as its factorization.
1028527087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 90078.
The product of its (nonzero) digits is 62720, while the sum is 40.
The square root of 1028527087 is about 32070.6577263392. The cubic root of 1028527087 is about 1009.4200137082.
The spelling of 1028527087 in words is "one billion, twenty-eight million, five hundred twenty-seven thousand, eighty-seven".
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