Base | Representation |
---|---|
bin | 1011011010100… |
… | …1100100101011 |
3 | 10100002120200112 |
4 | 2312221210223 |
5 | 44224133431 |
6 | 4430124535 |
7 | 1120656161 |
oct | 266514453 |
9 | 110076615 |
10 | 47880491 |
11 | 2503335a |
12 | 1405074b |
13 | 9bc5769 |
14 | 6505231 |
15 | 430bc2b |
hex | 2da992b |
47880491 has 2 divisors, whose sum is σ = 47880492. Its totient is φ = 47880490.
The previous prime is 47880409. The next prime is 47880493. The reversal of 47880491 is 19408874.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 47880491 - 214 = 47864107 is a prime.
Together with 47880493, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (47880493) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23940245 + 23940246.
It is an arithmetic number, because the mean of its divisors is an integer number (23940246).
Almost surely, 247880491 is an apocalyptic number.
47880491 is a deficient number, since it is larger than the sum of its proper divisors (1).
47880491 is an equidigital number, since it uses as much as digits as its factorization.
47880491 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 64512, while the sum is 41.
The square root of 47880491 is about 6919.5730359611. The cubic root of 47880491 is about 363.1222536460.
The spelling of 47880491 in words is "forty-seven million, eight hundred eighty thousand, four hundred ninety-one".
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