Base | Representation |
---|---|
bin | 110001100101… |
… | …011101010000 |
3 | 220110101120012 |
4 | 301211131100 |
5 | 11311422410 |
6 | 1142334052 |
7 | 215325305 |
oct | 61453520 |
9 | 26411505 |
10 | 12998480 |
11 | 7378a50 |
12 | 442a328 |
13 | 2901611 |
14 | 1a250ac |
15 | 121b605 |
hex | c65750 |
12998480 has 40 divisors (see below), whose sum is σ = 32971104. Its totient is φ = 4726400.
The previous prime is 12998471. The next prime is 12998483. The reversal of 12998480 is 8489921.
It is a tau number, because it is divible by the number of its divisors (40).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12998483) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6506 + ... + 8265.
Almost surely, 212998480 is an apocalyptic number.
12998480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12998480 is an abundant number, since it is smaller than the sum of its proper divisors (19972624).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12998480 is a wasteful number, since it uses less digits than its factorization.
12998480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14795 (or 14789 counting only the distinct ones).
The product of its (nonzero) digits is 41472, while the sum is 41.
The square root of 12998480 is about 3605.3404832276. The cubic root of 12998480 is about 235.1243042387.
It can be divided in two parts, 1299 and 8480, that added together give a palindrome (9779).
The spelling of 12998480 in words is "twelve million, nine hundred ninety-eight thousand, four hundred eighty".
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