Base | Representation |
---|---|
bin | 11001011000111… |
… | …01010000001011 |
3 | 112211202112122211 |
4 | 30230131100023 |
5 | 414010340442 |
6 | 33044525551 |
7 | 5164210060 |
oct | 1454352013 |
9 | 484675584 |
10 | 212980747 |
11 | aa249651 |
12 | 5b3b08b7 |
13 | 35180815 |
14 | 20400c67 |
15 | 13a70617 |
hex | cb1d40b |
212980747 has 8 divisors (see below), whose sum is σ = 256217600. Its totient is φ = 172946664.
The previous prime is 212980723. The next prime is 212980751. The reversal of 212980747 is 747089212.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 212980747 - 223 = 204592139 is a prime.
It is a super-3 number, since 3×2129807473 (a number of 26 digits) contains 333 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (212980847) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 800547 + ... + 800812.
It is an arithmetic number, because the mean of its divisors is an integer number (32027200).
Almost surely, 2212980747 is an apocalyptic number.
212980747 is a deficient number, since it is larger than the sum of its proper divisors (43236853).
212980747 is a wasteful number, since it uses less digits than its factorization.
212980747 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1601385.
The product of its (nonzero) digits is 56448, while the sum is 40.
The square root of 212980747 is about 14593.8599075090. The cubic root of 212980747 is about 597.1912675908.
The spelling of 212980747 in words is "two hundred twelve million, nine hundred eighty thousand, seven hundred forty-seven".
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