Base | Representation |
---|---|
bin | 10111111010101000… |
… | …00010110111001100 |
3 | 1020010211101200110022 |
4 | 23331110002313030 |
5 | 202243443343334 |
6 | 5522030001312 |
7 | 633116465450 |
oct | 137524026714 |
9 | 36124350408 |
10 | 12839824844 |
11 | 54998234a0 |
12 | 25a4046238 |
13 | 129814c5c2 |
14 | 89b392660 |
15 | 50236282e |
hex | 2fd502dcc |
12839824844 has 24 divisors (see below), whose sum is σ = 28014163968. Its totient is φ = 5002529040.
The previous prime is 12839824843. The next prime is 12839824847. The reversal of 12839824844 is 44842893821.
It is a super-2 number, since 2×128398248442 (a number of 21 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.
It is not an unprimeable number, because it can be changed into a prime (12839824843) 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, 20843564 + ... + 20844179.
It is an arithmetic number, because the mean of its divisors is an integer number (1167256832).
Almost surely, 212839824844 is an apocalyptic number.
12839824844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
It is an amenable number.
12839824844 is an abundant number, since it is smaller than the sum of its proper divisors (15174339124).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12839824844 is a wasteful number, since it uses less digits than its factorization.
12839824844 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 41687765 (or 41687763 counting only the distinct ones).
The product of its digits is 3538944, while the sum is 53.
The spelling of 12839824844 in words is "twelve billion, eight hundred thirty-nine million, eight hundred twenty-four thousand, eight hundred forty-four".
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