Base | Representation |
---|---|
bin | 1111010001001… |
… | …11010100101101 |
3 | 22221000111210121 |
4 | 13220213110231 |
5 | 230242243331 |
6 | 20413204541 |
7 | 3113503324 |
oct | 750472455 |
9 | 287014717 |
10 | 128087341 |
11 | 66335a08 |
12 | 36a90751 |
13 | 206c9035 |
14 | 130230bb |
15 | b3a1c11 |
hex | 7a2752d |
128087341 has 4 divisors (see below), whose sum is σ = 134828800. Its totient is φ = 121345884.
The previous prime is 128087327. The next prime is 128087347. The reversal of 128087341 is 143780821.
It is a happy number.
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 128087341 - 27 = 128087213 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 128087297 and 128087306.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128087347) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370701 + ... + 3370738.
It is an arithmetic number, because the mean of its divisors is an integer number (33707200).
Almost surely, 2128087341 is an apocalyptic number.
It is an amenable number.
128087341 is a deficient number, since it is larger than the sum of its proper divisors (6741459).
128087341 is an equidigital number, since it uses as much as digits as its factorization.
128087341 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6741458.
The product of its (nonzero) digits is 10752, while the sum is 34.
The square root of 128087341 is about 11317.5678040823. The cubic root of 128087341 is about 504.0830217753.
The spelling of 128087341 in words is "one hundred twenty-eight million, eighty-seven thousand, three hundred forty-one".
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