Base | Representation |
---|---|
bin | 1101000001010011… |
… | …00010011110100100 |
3 | 200001011022111202222 |
4 | 12200221202132210 |
5 | 103303443222410 |
6 | 3113344251512 |
7 | 335136545564 |
oct | 64051423644 |
9 | 20034274688 |
10 | 6990210980 |
11 | 2a67878a75 |
12 | 1431010b98 |
13 | 87528941c |
14 | 4a452cda4 |
15 | 2ada33955 |
hex | 1a0a627a4 |
6990210980 has 12 divisors (see below), whose sum is σ = 14679443100. Its totient is φ = 2796084384.
The previous prime is 6990210973. The next prime is 6990210989. The reversal of 6990210980 is 890120996.
It can be written as a sum of positive squares in 2 ways, for example, as 4500799744 + 2489411236 = 67088^2 + 49894^2 .
It is not an unprimeable number, because it can be changed into a prime (6990210989) 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, 174755255 + ... + 174755294.
It is an arithmetic number, because the mean of its divisors is an integer number (1223286925).
Almost surely, 26990210980 is an apocalyptic number.
It is an amenable number.
6990210980 is an abundant number, since it is smaller than the sum of its proper divisors (7689232120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6990210980 is a wasteful number, since it uses less digits than its factorization.
6990210980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 349510558 (or 349510556 counting only the distinct ones).
The product of its (nonzero) digits is 69984, while the sum is 44.
The square root of 6990210980 is about 83607.4816030240. The cubic root of 6990210980 is about 1912.0390657593.
The spelling of 6990210980 in words is "six billion, nine hundred ninety million, two hundred ten thousand, nine hundred eighty".
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