Base | Representation |
---|---|
bin | 1111010111101… |
… | …10000001111000 |
3 | 22222121112012122 |
4 | 13223312001320 |
5 | 231001342013 |
6 | 20443300412 |
7 | 3123630620 |
oct | 753660170 |
9 | 288545178 |
10 | 128934008 |
11 | 66864035 |
12 | 3721a708 |
13 | 20934518 |
14 | 131a3880 |
15 | b4bca08 |
hex | 7af6078 |
128934008 has 32 divisors (see below), whose sum is σ = 276773760. Its totient is φ = 55160160.
The previous prime is 128934007. The next prime is 128934023. The reversal of 128934008 is 800439821.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128934007) 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, 36563 + ... + 39933.
It is an arithmetic number, because the mean of its divisors is an integer number (8649180).
Almost surely, 2128934008 is an apocalyptic number.
It is an amenable number.
128934008 is an abundant number, since it is smaller than the sum of its proper divisors (147839752).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128934008 is a wasteful number, since it uses less digits than its factorization.
128934008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4067 (or 4063 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 35.
The square root of 128934008 is about 11354.9111841529. The cubic root of 128934008 is about 505.1912591239.
The spelling of 128934008 in words is "one hundred twenty-eight million, nine hundred thirty-four thousand, eight".
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