Base | Representation |
---|---|
bin | 101111110101… |
… | …111111101010 |
3 | 212121012021221 |
4 | 233311333222 |
5 | 11202320210 |
6 | 1124452254 |
7 | 211414252 |
oct | 57657752 |
9 | 25535257 |
10 | 12541930 |
11 | 7096a35 |
12 | 424a08a |
13 | 27a187b |
14 | 1946962 |
15 | 117b1da |
hex | bf5fea |
12541930 has 8 divisors (see below), whose sum is σ = 22575492. Its totient is φ = 5016768.
The previous prime is 12541913. The next prime is 12541933. The reversal of 12541930 is 3914521.
It can be written as a sum of positive squares in 2 ways, for example, as 12538681 + 3249 = 3541^2 + 57^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a junction number, because it is equal to n+sod(n) for n = 12541895 and 12541904.
It is not an unprimeable number, because it can be changed into a prime (12541933) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627087 + ... + 627106.
Almost surely, 212541930 is an apocalyptic number.
12541930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12541930 is a deficient number, since it is larger than the sum of its proper divisors (10033562).
12541930 is a wasteful number, since it uses less digits than its factorization.
12541930 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1254200.
The product of its (nonzero) digits is 1080, while the sum is 25.
The square root of 12541930 is about 3541.4587389944. The cubic root of 12541930 is about 232.3386478290.
The spelling of 12541930 in words is "twelve million, five hundred forty-one thousand, nine hundred thirty".
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