Base | Representation |
---|---|
bin | 11011111101100001… |
… | …011100011011011100 |
3 | 2212111100221220212120 |
4 | 123331201130123130 |
5 | 442441420102440 |
6 | 21443101302540 |
7 | 2112001021431 |
oct | 337541343334 |
9 | 85440856776 |
10 | 30023206620 |
11 | 11807354560 |
12 | 599a864a50 |
13 | 2aa612bc24 |
14 | 164b569b88 |
15 | baabaedd0 |
hex | 6fd85c6dc |
30023206620 has 96 divisors (see below), whose sum is σ = 91970726400. Its totient is φ = 7257442560.
The previous prime is 30023206613. The next prime is 30023206621. The reversal of 30023206620 is 2660232003.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30023206621) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165169 + ... + 295511.
It is an arithmetic number, because the mean of its divisors is an integer number (958028400).
Almost surely, 230023206620 is an apocalyptic number.
30023206620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30023206620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45985363200).
30023206620 is an abundant number, since it is smaller than the sum of its proper divisors (61947519780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30023206620 is a wasteful number, since it uses less digits than its factorization.
30023206620 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 130715 (or 130713 counting only the distinct ones).
The product of its (nonzero) digits is 2592, while the sum is 24.
Adding to 30023206620 its reverse (2660232003), we get a palindrome (32683438623).
The spelling of 30023206620 in words is "thirty billion, twenty-three million, two hundred six thousand, six hundred twenty".
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