Base | Representation |
---|---|
bin | 110001100001… |
… | …001000110000 |
3 | 220102111021210 |
4 | 301201020300 |
5 | 11310341114 |
6 | 1142120120 |
7 | 215222565 |
oct | 61411060 |
9 | 26374253 |
10 | 12980784 |
11 | 7366723 |
12 | 4420040 |
13 | 28c654b |
14 | 1a1c86c |
15 | 1216259 |
hex | c61230 |
12980784 has 40 divisors (see below), whose sum is σ = 34444720. Its totient is φ = 4209408.
The previous prime is 12980783. The next prime is 12980837. The reversal of 12980784 is 48708921.
It is not an unprimeable number, because it can be changed into a prime (12980783) 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, 1879 + ... + 5430.
It is an arithmetic number, because the mean of its divisors is an integer number (861118).
Almost surely, 212980784 is an apocalyptic number.
It is an amenable number.
12980784 is an abundant number, since it is smaller than the sum of its proper divisors (21463936).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12980784 is a wasteful number, since it uses less digits than its factorization.
12980784 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7357 (or 7351 counting only the distinct ones).
The product of its (nonzero) digits is 32256, while the sum is 39.
The square root of 12980784 is about 3602.8855102542. The cubic root of 12980784 is about 235.0175571612.
The spelling of 12980784 in words is "twelve million, nine hundred eighty thousand, seven hundred eighty-four".
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