Base | Representation |
---|---|
bin | 110001001111… |
… | …111100101100 |
3 | 220021220201020 |
4 | 301033330230 |
5 | 11301113010 |
6 | 1140414140 |
7 | 214510410 |
oct | 61177454 |
9 | 26256636 |
10 | 12910380 |
11 | 731883a |
12 | 43a7350 |
13 | 28a04a2 |
14 | 1a00d40 |
15 | 1200470 |
hex | c4ff2c |
12910380 has 96 divisors (see below), whose sum is σ = 42094080. Its totient is φ = 2895360.
The previous prime is 12910379. The next prime is 12910397. The reversal of 12910380 is 8301921.
It is a self number, because there is not a number n which added to its sum of digits gives 12910380.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24520 + ... + 25040.
It is an arithmetic number, because the mean of its divisors is an integer number (438480).
Almost surely, 212910380 is an apocalyptic number.
12910380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12910380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047040).
12910380 is an abundant number, since it is smaller than the sum of its proper divisors (29183700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12910380 is a wasteful number, since it uses less digits than its factorization.
12910380 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 599 (or 597 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 24.
The square root of 12910380 is about 3593.1017241375. The cubic root of 12910380 is about 234.5918977033.
The spelling of 12910380 in words is "twelve million, nine hundred ten thousand, three hundred eighty".
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