Base | Representation |
---|---|
bin | 1111100101000… |
… | …00000111110000 |
3 | 100002220012021100 |
4 | 13302200013300 |
5 | 231423214110 |
6 | 20544524400 |
7 | 3144520104 |
oct | 762400760 |
9 | 302805240 |
10 | 130679280 |
11 | 67846306 |
12 | 37920700 |
13 | 210c5a24 |
14 | 134d9904 |
15 | b714bc0 |
hex | 7ca01f0 |
130679280 has 60 divisors (see below), whose sum is σ = 438867000. Its totient is φ = 34847616.
The previous prime is 130679243. The next prime is 130679281. The reversal of 130679280 is 82976031.
130679280 is a `hidden beast` number, since 1 + 306 + 79 + 280 = 666.
It is a tau number, because it is divible by the number of its divisors (60).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130679281) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90030 + ... + 91469.
It is an arithmetic number, because the mean of its divisors is an integer number (7314450).
Almost surely, 2130679280 is an apocalyptic number.
130679280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
130679280 is an abundant number, since it is smaller than the sum of its proper divisors (308187720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130679280 is a wasteful number, since it uses less digits than its factorization.
130679280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 181518 (or 181509 counting only the distinct ones).
The product of its (nonzero) digits is 18144, while the sum is 36.
The square root of 130679280 is about 11431.5038380783. The cubic root of 130679280 is about 507.4605015083.
The spelling of 130679280 in words is "one hundred thirty million, six hundred seventy-nine thousand, two hundred eighty".
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