Base | Representation |
---|---|
bin | 1001100010100… |
… | …10001110101011 |
3 | 12120120212120202 |
4 | 10301102032223 |
5 | 130441403322 |
6 | 11535142415 |
7 | 1661142332 |
oct | 461221653 |
9 | 176525522 |
10 | 80028587 |
11 | 411a0731 |
12 | 22974a0b |
13 | 137703c2 |
14 | a8b2d19 |
15 | 705c292 |
hex | 4c523ab |
80028587 has 2 divisors, whose sum is σ = 80028588. Its totient is φ = 80028586.
The previous prime is 80028499. The next prime is 80028593. The reversal of 80028587 is 78582008.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 80028587 - 28 = 80028331 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 80028587.
It is not a weakly prime, because it can be changed into another prime (80028787) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40014293 + 40014294.
It is an arithmetic number, because the mean of its divisors is an integer number (40014294).
Almost surely, 280028587 is an apocalyptic number.
80028587 is a deficient number, since it is larger than the sum of its proper divisors (1).
80028587 is an equidigital number, since it uses as much as digits as its factorization.
80028587 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 35840, while the sum is 38.
The square root of 80028587 is about 8945.8698291446. The cubic root of 80028587 is about 430.9382559147.
The spelling of 80028587 in words is "eighty million, twenty-eight thousand, five hundred eighty-seven".
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