Base | Representation |
---|---|
bin | 1111010011001… |
… | …10010000010010 |
3 | 22221111121101110 |
4 | 13221212100102 |
5 | 230324020411 |
6 | 20422514150 |
7 | 3115625661 |
oct | 751462022 |
9 | 287447343 |
10 | 128345106 |
11 | 664a163a |
12 | 36b95956 |
13 | 20789466 |
14 | 1308cdd8 |
15 | b4032a6 |
hex | 7a66412 |
128345106 has 32 divisors (see below), whose sum is σ = 269267328. Its totient is φ = 40705280.
The previous prime is 128345101. The next prime is 128345123. The reversal of 128345106 is 601543821.
It is not an unprimeable number, because it can be changed into a prime (128345101) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24826 + ... + 29546.
It is an arithmetic number, because the mean of its divisors is an integer number (8414604).
Almost surely, 2128345106 is an apocalyptic number.
128345106 is an abundant number, since it is smaller than the sum of its proper divisors (140922222).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128345106 is a wasteful number, since it uses less digits than its factorization.
128345106 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4946.
The product of its (nonzero) digits is 5760, while the sum is 30.
The square root of 128345106 is about 11328.9499072068. The cubic root of 128345106 is about 504.4209367619.
Adding to 128345106 its reverse (601543821), we get a palindrome (729888927).
The spelling of 128345106 in words is "one hundred twenty-eight million, three hundred forty-five thousand, one hundred six".
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