Base | Representation |
---|---|
bin | 1111010001110… |
… | …10011101111001 |
3 | 22221011111100202 |
4 | 13220322131321 |
5 | 230302301003 |
6 | 20415011545 |
7 | 3114251042 |
oct | 750723571 |
9 | 287144322 |
10 | 128165753 |
11 | 66389911 |
12 | 36b09bb5 |
13 | 20725931 |
14 | 130438c9 |
15 | b3ba088 |
hex | 7a3a779 |
128165753 has 4 divisors (see below), whose sum is σ = 128192400. Its totient is φ = 128139108.
The previous prime is 128165731. The next prime is 128165803. The reversal of 128165753 is 357561821.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 128165753 - 26 = 128165689 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (121165753) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3875 + ... + 16472.
It is an arithmetic number, because the mean of its divisors is an integer number (32048100).
Almost surely, 2128165753 is an apocalyptic number.
It is an amenable number.
128165753 is a deficient number, since it is larger than the sum of its proper divisors (26647).
128165753 is an equidigital number, since it uses as much as digits as its factorization.
128165753 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26646.
The product of its digits is 50400, while the sum is 38.
The square root of 128165753 is about 11321.0314459417. The cubic root of 128165753 is about 504.1858633069.
The spelling of 128165753 in words is "one hundred twenty-eight million, one hundred sixty-five thousand, seven hundred fifty-three".
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