Base | Representation |
---|---|
bin | 110001011100… |
… | …010111001110 |
3 | 220101111110120 |
4 | 301130113032 |
5 | 11304224410 |
6 | 1141445410 |
7 | 215111562 |
oct | 61342716 |
9 | 26344416 |
10 | 12961230 |
11 | 7352a67 |
12 | 4410866 |
13 | 28ba689 |
14 | 1a156a2 |
15 | 1210570 |
hex | c5c5ce |
12961230 has 32 divisors (see below), whose sum is σ = 32745600. Its totient is φ = 3274272.
The previous prime is 12961187. The next prime is 12961243. The reversal of 12961230 is 3216921.
It is a super-2 number, since 2×129612302 = 335986966225800, which contains 22 as substring.
It is an alternating number because its digits alternate between odd and even.
It is a self number, because there is not a number n which added to its sum of digits gives 12961230.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10800 + ... + 11939.
It is an arithmetic number, because the mean of its divisors is an integer number (1023300).
Almost surely, 212961230 is an apocalyptic number.
12961230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12961230 is an abundant number, since it is smaller than the sum of its proper divisors (19784370).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12961230 is a wasteful number, since it uses less digits than its factorization.
12961230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22768.
The product of its (nonzero) digits is 648, while the sum is 24.
The square root of 12961230 is about 3600.1708292802. The cubic root of 12961230 is about 234.8994892338.
The spelling of 12961230 in words is "twelve million, nine hundred sixty-one thousand, two hundred thirty".
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