Base | Representation |
---|---|
bin | 10110101100100111… |
… | …00011000010101000 |
3 | 1011110012221121010110 |
4 | 23112103203002220 |
5 | 144423424224310 |
6 | 5333051014320 |
7 | 610652022123 |
oct | 132623430250 |
9 | 34405847113 |
10 | 12185383080 |
11 | 5193370732 |
12 | 2440a3a3a0 |
13 | 11c26a1960 |
14 | 8384b73ba |
15 | 4b4b8dd20 |
hex | 2d64e30a8 |
12185383080 has 128 divisors (see below), whose sum is σ = 41684025600. Its totient is φ = 2823032832.
The previous prime is 12185383073. The next prime is 12185383081. The reversal of 12185383080 is 8038358121.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is not an unprimeable number, because it can be changed into a prime (12185383081) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203220 + ... + 256259.
It is an arithmetic number, because the mean of its divisors is an integer number (325656450).
Almost surely, 212185383080 is an apocalyptic number.
12185383080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12185383080 is an abundant number, since it is smaller than the sum of its proper divisors (29498642520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12185383080 is a wasteful number, since it uses less digits than its factorization.
12185383080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 459523 (or 459519 counting only the distinct ones).
The product of its (nonzero) digits is 46080, while the sum is 39.
The spelling of 12185383080 in words is "twelve billion, one hundred eighty-five million, three hundred eighty-three thousand, eighty".
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