Base | Representation |
---|---|
bin | 10110100010101101… |
… | …00111100101000100 |
3 | 1011020102121122100011 |
4 | 23101112213211010 |
5 | 144241142131040 |
6 | 5320522200004 |
7 | 605622604234 |
oct | 132126474504 |
9 | 34212548304 |
10 | 12102302020 |
11 | 51504856a6 |
12 | 2419053004 |
13 | 11ab403073 |
14 | 82b44bcc4 |
15 | 4ac72c3ea |
hex | 2d15a7944 |
12102302020 has 12 divisors (see below), whose sum is σ = 25414834284. Its totient is φ = 4840920800.
The previous prime is 12102301999. The next prime is 12102302021. The reversal of 12102302020 is 2020320121.
It can be written as a sum of positive squares in 2 ways, for example, as 2585519104 + 9516782916 = 50848^2 + 97554^2 .
It is not an unprimeable number, because it can be changed into a prime (12102302021) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302557531 + ... + 302557570.
It is an arithmetic number, because the mean of its divisors is an integer number (2117902857).
Almost surely, 212102302020 is an apocalyptic number.
12102302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12102302020 is an abundant number, since it is smaller than the sum of its proper divisors (13312532264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12102302020 is a wasteful number, since it uses less digits than its factorization.
12102302020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 605115110 (or 605115108 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 13.
Adding to 12102302020 its reverse (2020320121), we get a palindrome (14122622141).
The spelling of 12102302020 in words is "twelve billion, one hundred two million, three hundred two thousand, twenty".
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