Base | Representation |
---|---|
bin | 10101100010101010… |
… | …010101100100000100 |
3 | 2012200222100221000012 |
4 | 111202222111210010 |
5 | 334332301231040 |
6 | 14343102205352 |
7 | 1446120423524 |
oct | 254252254404 |
9 | 65628327005 |
10 | 23130102020 |
11 | 989a380aa3 |
12 | 4596283858 |
13 | 22480121cc |
14 | 1195cb7684 |
15 | 90595d865 |
hex | 562a95904 |
23130102020 has 24 divisors (see below), whose sum is σ = 49073973144. Its totient is φ = 9156658176.
The previous prime is 23130102019. The next prime is 23130102031. The reversal of 23130102020 is 2020103132.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 2383936 + 23127718084 = 1544^2 + 152078^2 .
It is a junction number, because it is equal to n+sod(n) for n = 23130101986 and 23130102004.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5959427 + ... + 5963306.
It is an arithmetic number, because the mean of its divisors is an integer number (2044748881).
Almost surely, 223130102020 is an apocalyptic number.
23130102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
23130102020 is an abundant number, since it is smaller than the sum of its proper divisors (25943871124).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23130102020 is a wasteful number, since it uses less digits than its factorization.
23130102020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11922839 (or 11922837 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 14.
Adding to 23130102020 its reverse (2020103132), we get a palindrome (25150205152).
The spelling of 23130102020 in words is "twenty-three billion, one hundred thirty million, one hundred two thousand, twenty".
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