Base | Representation |
---|---|
bin | 1010011101010110… |
… | …1100001010011101 |
3 | 21020122202210220101 |
4 | 2213111230022131 |
5 | 21222203342424 |
6 | 1142330021101 |
7 | 126400123525 |
oct | 24725541235 |
9 | 7218683811 |
10 | 2807480989 |
11 | 1210828025 |
12 | 664277791 |
13 | 359849371 |
14 | 1c8c10685 |
15 | 116716344 |
hex | a756c29d |
2807480989 has 2 divisors, whose sum is σ = 2807480990. Its totient is φ = 2807480988.
The previous prime is 2807480969. The next prime is 2807481007. The reversal of 2807480989 is 9890847082.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1922120964 + 885360025 = 43842^2 + 29755^2 .
It is a cyclic number.
It is not a de Polignac number, because 2807480989 - 29 = 2807480477 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2807480969) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1403740494 + 1403740495.
It is an arithmetic number, because the mean of its divisors is an integer number (1403740495).
Almost surely, 22807480989 is an apocalyptic number.
It is an amenable number.
2807480989 is a deficient number, since it is larger than the sum of its proper divisors (1).
2807480989 is an equidigital number, since it uses as much as digits as its factorization.
2807480989 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2322432, while the sum is 55.
The square root of 2807480989 is about 52985.6677696903. The cubic root of 2807480989 is about 1410.7138864385.
The spelling of 2807480989 in words is "two billion, eight hundred seven million, four hundred eighty thousand, nine hundred eighty-nine".
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