Base | Representation |
---|---|
bin | 1111010101100… |
… | …01110010010101 |
3 | 22222002022202221 |
4 | 13222301302111 |
5 | 230413420420 |
6 | 20433302341 |
7 | 3121354651 |
oct | 752616225 |
9 | 288068687 |
10 | 128654485 |
11 | 66693023 |
12 | 371049b1 |
13 | 2086721b |
14 | 1312da61 |
15 | b464caa |
hex | 7ab1c95 |
128654485 has 8 divisors (see below), whose sum is σ = 156560256. Its totient is φ = 101473680.
The previous prime is 128654483. The next prime is 128654503. The reversal of 128654485 is 584456821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 128654485 - 21 = 128654483 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128654483) 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, 180849 + ... + 181558.
It is an arithmetic number, because the mean of its divisors is an integer number (19570032).
Almost surely, 2128654485 is an apocalyptic number.
It is an amenable number.
128654485 is a deficient number, since it is larger than the sum of its proper divisors (27905771).
128654485 is an equidigital number, since it uses as much as digits as its factorization.
128654485 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 362483.
The product of its digits is 307200, while the sum is 43.
The square root of 128654485 is about 11342.5960432345. The cubic root of 128654485 is about 504.8259178431.
The spelling of 128654485 in words is "one hundred twenty-eight million, six hundred fifty-four thousand, four hundred eighty-five".
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