Base | Representation |
---|---|
bin | 1111010110000… |
… | …00100000111000 |
3 | 22222012101112010 |
4 | 13223000200320 |
5 | 230422333213 |
6 | 20434445520 |
7 | 3122025555 |
oct | 753004070 |
9 | 288171463 |
10 | 128714808 |
11 | 66724382 |
12 | 371338a0 |
13 | 20888811 |
14 | 13147a2c |
15 | b477ac3 |
hex | 7ac0838 |
128714808 has 64 divisors (see below), whose sum is σ = 337478400. Its totient is φ = 40832000.
The previous prime is 128714777. The next prime is 128714849. The reversal of 128714808 is 808417821.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138088 + ... + 139016.
It is an arithmetic number, because the mean of its divisors is an integer number (5273100).
Almost surely, 2128714808 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 128714808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168739200).
128714808 is an abundant number, since it is smaller than the sum of its proper divisors (208763592).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128714808 is a wasteful number, since it uses less digits than its factorization.
128714808 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1212 (or 1208 counting only the distinct ones).
The product of its (nonzero) digits is 28672, while the sum is 39.
The square root of 128714808 is about 11345.2548671240. The cubic root of 128714808 is about 504.9048057668.
The spelling of 128714808 in words is "one hundred twenty-eight million, seven hundred fourteen thousand, eight hundred eight".
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