Base | Representation |
---|---|
bin | 1111010100010… |
… | …00100011100111 |
3 | 22221202202010012 |
4 | 13222020203213 |
5 | 230343014412 |
6 | 20425520435 |
7 | 3120052415 |
oct | 752104347 |
9 | 287682105 |
10 | 128485607 |
11 | 66588158 |
12 | 3704311b |
13 | 208083b3 |
14 | 130c82b5 |
15 | b42ec22 |
hex | 7a888e7 |
128485607 has 8 divisors (see below), whose sum is σ = 133066752. Its totient is φ = 123931800.
The previous prime is 128485601. The next prime is 128485661. The reversal of 128485607 is 706584821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 128485607 - 212 = 128481511 is a prime.
It is a super-3 number, since 3×1284856073 (a number of 25 digits) contains 333 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128485601) 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, 2978 + ... + 16304.
It is an arithmetic number, because the mean of its divisors is an integer number (16633344).
Almost surely, 2128485607 is an apocalyptic number.
128485607 is a deficient number, since it is larger than the sum of its proper divisors (4581145).
128485607 is a wasteful number, since it uses less digits than its factorization.
128485607 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13669.
The product of its (nonzero) digits is 107520, while the sum is 41.
The square root of 128485607 is about 11335.1491829618. The cubic root of 128485607 is about 504.6049349488.
The spelling of 128485607 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, six hundred seven".
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