Base | Representation |
---|---|
bin | 100110010111… |
… | …0111001001111 |
3 | 1101211221121212 |
4 | 1030232321033 |
5 | 20122140043 |
6 | 1555045035 |
7 | 332655245 |
oct | 114567117 |
9 | 41757555 |
10 | 20115023 |
11 | 10399795 |
12 | 68a077b |
13 | 42238a6 |
14 | 2958795 |
15 | 1b75018 |
hex | 132ee4f |
20115023 has 2 divisors, whose sum is σ = 20115024. Its totient is φ = 20115022.
The previous prime is 20114993. The next prime is 20115031. The reversal of 20115023 is 32051102.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 20115023 - 210 = 20113999 is a prime.
It is a super-2 number, since 2×201150232 = 809228300581058, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 20114989 and 20115007.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (20115083) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10057511 + 10057512.
It is an arithmetic number, because the mean of its divisors is an integer number (10057512).
Almost surely, 220115023 is an apocalyptic number.
20115023 is a deficient number, since it is larger than the sum of its proper divisors (1).
20115023 is an equidigital number, since it uses as much as digits as its factorization.
20115023 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 60, while the sum is 14.
The square root of 20115023 is about 4484.9774804340. The cubic root of 20115023 is about 271.9611346935.
Adding to 20115023 its reverse (32051102), we get a palindrome (52166125).
The spelling of 20115023 in words is "twenty million, one hundred fifteen thousand, twenty-three".
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