Base | Representation |
---|---|
bin | 101110010010… |
… | …001001110100 |
3 | 211211102022122 |
4 | 232102021310 |
5 | 11101223410 |
6 | 1112015112 |
7 | 205062056 |
oct | 56221164 |
9 | 24742278 |
10 | 12132980 |
11 | 6937762 |
12 | 4091498 |
13 | 268a6a2 |
14 | 187b8d6 |
15 | 10e9e55 |
hex | b92274 |
12132980 has 12 divisors (see below), whose sum is σ = 25479300. Its totient is φ = 4853184.
The previous prime is 12132971. The next prime is 12133013. The reversal of 12132980 is 8923121.
It can be written as a sum of positive squares in 2 ways, for example, as 6120676 + 6012304 = 2474^2 + 2452^2 .
It is a congruent number.
It is an unprimeable number.
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 3 ways as a sum of consecutive naturals, for example, 303305 + ... + 303344.
It is an arithmetic number, because the mean of its divisors is an integer number (2123275).
Almost surely, 212132980 is an apocalyptic number.
12132980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12132980 is an abundant number, since it is smaller than the sum of its proper divisors (13346320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12132980 is a wasteful number, since it uses less digits than its factorization.
12132980 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 606658 (or 606656 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 26.
The square root of 12132980 is about 3483.2427420437. The cubic root of 12132980 is about 229.7854331633.
The spelling of 12132980 in words is "twelve million, one hundred thirty-two thousand, nine hundred eighty".
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