Base | Representation |
---|---|
bin | 10010101111010111… |
… | …110101011110000100 |
3 | 1220221100100010112111 |
4 | 102233113311132010 |
5 | 312202231132213 |
6 | 13124411030404 |
7 | 1311434166640 |
oct | 225727653604 |
9 | 56840303474 |
10 | 20122130308 |
11 | 8596466365 |
12 | 3a96a3b404 |
13 | 1b88a993a7 |
14 | d8c5d7c20 |
15 | 7cb842a3d |
hex | 4af5f5784 |
20122130308 has 48 divisors (see below), whose sum is σ = 43415616384. Its totient is φ = 7963338240.
The previous prime is 20122130299. The next prime is 20122130309. The reversal of 20122130308 is 80303122102.
It is not an unprimeable number, because it can be changed into a prime (20122130309) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373578 + ... + 424033.
It is an arithmetic number, because the mean of its divisors is an integer number (904492008).
Almost surely, 220122130308 is an apocalyptic number.
20122130308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
20122130308 is an abundant number, since it is smaller than the sum of its proper divisors (23293486076).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20122130308 is a wasteful number, since it uses less digits than its factorization.
20122130308 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 797692 (or 797690 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 22.
The spelling of 20122130308 in words is "twenty billion, one hundred twenty-two million, one hundred thirty thousand, three hundred eight".
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