Base | Representation |
---|---|
bin | 11011111111001000… |
… | …011111110101000100 |
3 | 2212120020210102011020 |
4 | 123333020133311010 |
5 | 443020324041010 |
6 | 21445504311140 |
7 | 2112446444604 |
oct | 337710376504 |
9 | 85506712136 |
10 | 30050221380 |
11 | 11820626103 |
12 | 59a79124b0 |
13 | 2aab8ca1aa |
14 | 1650d9cc04 |
15 | bad249470 |
hex | 6ff21fd44 |
30050221380 has 192 divisors, whose sum is σ = 89370279936. Its totient is φ = 7533504000.
The previous prime is 30050221379. The next prime is 30050221391. The reversal of 30050221380 is 8312205003.
It is a self number, because there is not a number n which added to its sum of digits gives 30050221380.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9415585 + ... + 9418775.
It is an arithmetic number, because the mean of its divisors is an integer number (465470208).
Almost surely, 230050221380 is an apocalyptic number.
30050221380 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 30050221380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44685139968).
30050221380 is an abundant number, since it is smaller than the sum of its proper divisors (59320058556).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30050221380 is a wasteful number, since it uses less digits than its factorization.
30050221380 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3378 (or 3376 counting only the distinct ones).
The product of its (nonzero) digits is 1440, while the sum is 24.
Adding to 30050221380 its reverse (8312205003), we get a palindrome (38362426383).
The spelling of 30050221380 in words is "thirty billion, fifty million, two hundred twenty-one thousand, three hundred eighty".
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