Base | Representation |
---|---|
bin | 10111111010011111… |
… | …01000111110100000 |
3 | 1020010202020000122012 |
4 | 23331033220332200 |
5 | 202243144421430 |
6 | 5521545132052 |
7 | 633103616324 |
oct | 137517507640 |
9 | 36122200565 |
10 | 12838670240 |
11 | 5499104a80 |
12 | 25a378a028 |
13 | 1297b36bc6 |
14 | 89b171984 |
15 | 5021d5695 |
hex | 2fd3e8fa0 |
12838670240 has 48 divisors (see below), whose sum is σ = 33088759200. Its totient is φ = 4668606720.
The previous prime is 12838670231. The next prime is 12838670281. The reversal of 12838670240 is 4207683821.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3645590 + ... + 3649109.
It is an arithmetic number, because the mean of its divisors is an integer number (689349150).
Almost surely, 212838670240 is an apocalyptic number.
12838670240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12838670240 is an abundant number, since it is smaller than the sum of its proper divisors (20250088960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12838670240 is a wasteful number, since it uses less digits than its factorization.
12838670240 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7294725 (or 7294717 counting only the distinct ones).
The product of its (nonzero) digits is 129024, while the sum is 41.
The spelling of 12838670240 in words is "twelve billion, eight hundred thirty-eight million, six hundred seventy thousand, two hundred forty".
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