Base | Representation |
---|---|
bin | 1111010001001… |
… | …11101010101001 |
3 | 22221000120201121 |
4 | 13220213222221 |
5 | 230242314440 |
6 | 20413215241 |
7 | 3113510401 |
oct | 750475251 |
9 | 287016647 |
10 | 128088745 |
11 | 66336a74 |
12 | 36a91521 |
13 | 206c9875 |
14 | 13023801 |
15 | b3a234a |
hex | 7a27aa9 |
128088745 has 8 divisors (see below), whose sum is σ = 158664960. Its totient is φ = 99165360.
The previous prime is 128088743. The next prime is 128088749. The reversal of 128088745 is 547880821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 128088745 - 21 = 128088743 is a prime.
It is not an unprimeable number, because it can be changed into a prime (128088743) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413035 + ... + 413344.
It is an arithmetic number, because the mean of its divisors is an integer number (19833120).
Almost surely, 2128088745 is an apocalyptic number.
It is an amenable number.
128088745 is a deficient number, since it is larger than the sum of its proper divisors (30576215).
128088745 is an equidigital number, since it uses as much as digits as its factorization.
128088745 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 826415.
The product of its (nonzero) digits is 143360, while the sum is 43.
The square root of 128088745 is about 11317.6298313737. The cubic root of 128088745 is about 504.0848635653.
Adding to 128088745 its product of nonzero digits (143360), we get a triangular number (128232105 = T16014).
The spelling of 128088745 in words is "one hundred twenty-eight million, eighty-eight thousand, seven hundred forty-five".
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