Base | Representation |
---|---|
bin | 1111011000001… |
… | …00111100010111 |
3 | 22222201122000010 |
4 | 13230010330113 |
5 | 231010320340 |
6 | 20444451303 |
7 | 3124303665 |
oct | 754047427 |
9 | 288648003 |
10 | 128995095 |
11 | 668a5a19 |
12 | 37249b33 |
13 | 20956278 |
14 | 131bbc35 |
15 | b4d0b80 |
hex | 7b04f17 |
128995095 has 8 divisors (see below), whose sum is σ = 206392176. Its totient is φ = 68797376.
The previous prime is 128995093. The next prime is 128995117. The reversal of 128995095 is 590599821.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 128995095 - 21 = 128995093 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128995093) 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, 4299822 + ... + 4299851.
It is an arithmetic number, because the mean of its divisors is an integer number (25799022).
Almost surely, 2128995095 is an apocalyptic number.
128995095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
128995095 is a deficient number, since it is larger than the sum of its proper divisors (77397081).
128995095 is an equidigital number, since it uses as much as digits as its factorization.
128995095 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8599681.
The product of its (nonzero) digits is 291600, while the sum is 48.
The square root of 128995095 is about 11357.6007589631. The cubic root of 128995095 is about 505.2710305420.
The spelling of 128995095 in words is "one hundred twenty-eight million, nine hundred ninety-five thousand, ninety-five".
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