Base | Representation |
---|---|
bin | 101011111000… |
… | …1001101010001 |
3 | 1121021221011011 |
4 | 1113301031101 |
5 | 21342224311 |
6 | 2141050521 |
7 | 366364645 |
oct | 127611521 |
9 | 47257134 |
10 | 23008081 |
11 | 11a95348 |
12 | 7856a41 |
13 | 49c7665 |
14 | 30acc25 |
15 | 2047321 |
hex | 15f1351 |
23008081 has 2 divisors, whose sum is σ = 23008082. Its totient is φ = 23008080.
The previous prime is 23008057. The next prime is 23008127. The reversal of 23008081 is 18080032.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 22648081 + 360000 = 4759^2 + 600^2 .
It is a cyclic number.
It is not a de Polignac number, because 23008081 - 217 = 22877009 is a prime.
It is a super-2 number, since 2×230080812 = 1058743582605122, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (23008681) 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 as a sum of consecutive naturals, namely, 11504040 + 11504041.
It is an arithmetic number, because the mean of its divisors is an integer number (11504041).
Almost surely, 223008081 is an apocalyptic number.
It is an amenable number.
23008081 is a deficient number, since it is larger than the sum of its proper divisors (1).
23008081 is an equidigital number, since it uses as much as digits as its factorization.
23008081 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 384, while the sum is 22.
The square root of 23008081 is about 4796.6739518129. The cubic root of 23008081 is about 284.4200003013.
The spelling of 23008081 in words is "twenty-three million, eight thousand, eighty-one".
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