Base | Representation |
---|---|
bin | 1010011000010011011011 |
3 | 12010020111022 |
4 | 22120103123 |
5 | 1144032422 |
6 | 134153055 |
7 | 32061623 |
oct | 12302333 |
9 | 5106438 |
10 | 2720987 |
11 | 1599355 |
12 | ab278b |
13 | 743669 |
14 | 50b883 |
15 | 38b342 |
hex | 2984db |
2720987 has 2 divisors, whose sum is σ = 2720988. Its totient is φ = 2720986.
The previous prime is 2720981. The next prime is 2720999. The reversal of 2720987 is 7890272.
2720987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2720987 - 218 = 2458843 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (2720981) by changing a digit.
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 as a sum of consecutive naturals, namely, 1360493 + 1360494.
It is an arithmetic number, because the mean of its divisors is an integer number (1360494).
22720987 is an apocalyptic number.
2720987 is a deficient number, since it is larger than the sum of its proper divisors (1).
2720987 is an equidigital number, since it uses as much as digits as its factorization.
2720987 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 14112, while the sum is 35.
The square root of 2720987 is about 1649.5414514343. The cubic root of 2720987 is about 139.6075232055.
The spelling of 2720987 in words is "two million, seven hundred twenty thousand, nine hundred eighty-seven".
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