Base | Representation |
---|---|
bin | 11100101010000010… |
… | …100000010110000000 |
3 | 2221102102022120002000 |
4 | 130222002200112000 |
5 | 1001004114232122 |
6 | 22045141224000 |
7 | 2136340200360 |
oct | 345202402600 |
9 | 87372276060 |
10 | 30770070912 |
11 | 1205a9a2779 |
12 | 5b68a02000 |
13 | 2b94a99369 |
14 | 16bc8229a0 |
15 | c0153d0ac |
hex | 72a0a0580 |
30770070912 has 512 divisors, whose sum is σ = 109278720000. Its totient is φ = 8337530880.
The previous prime is 30770070901. The next prime is 30770070913. The reversal of 30770070912 is 21907007703.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30770070913) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42795289 + ... + 42796007.
It is an arithmetic number, because the mean of its divisors is an integer number (213435000).
Almost surely, 230770070912 is an apocalyptic number.
30770070912 is a gapful number since it is divisible by the number (32) 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 30770070912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54639360000).
30770070912 is an abundant number, since it is smaller than the sum of its proper divisors (78508649088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30770070912 is a wasteful number, since it uses less digits than its factorization.
30770070912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 839 (or 821 counting only the distinct ones).
The product of its (nonzero) digits is 18522, while the sum is 36.
The spelling of 30770070912 in words is "thirty billion, seven hundred seventy million, seventy thousand, nine hundred twelve".
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