Base | Representation |
---|---|
bin | 11011111100100111… |
… | …111111011011001100 |
3 | 2212110022121202001110 |
4 | 123330213333123030 |
5 | 442424041124422 |
6 | 21441402412020 |
7 | 2111426012664 |
oct | 337447773314 |
9 | 85408552043 |
10 | 30008145612 |
11 | 117a98a7a45 |
12 | 5995801010 |
13 | 2aa2c878a3 |
14 | 16495691a4 |
15 | ba96d760c |
hex | 6fc9ff6cc |
30008145612 has 24 divisors (see below), whose sum is σ = 74137772016. Its totient is φ = 9414320128.
The previous prime is 30008145611. The next prime is 30008145623. The reversal of 30008145612 is 21654180003.
It is a self number, because there is not a number n which added to its sum of digits gives 30008145612.
It is not an unprimeable number, because it can be changed into a prime (30008145611) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73549173 + ... + 73549580.
It is an arithmetic number, because the mean of its divisors is an integer number (3089073834).
Almost surely, 230008145612 is an apocalyptic number.
It is an amenable number.
30008145612 is an abundant number, since it is smaller than the sum of its proper divisors (44129626404).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30008145612 is a wasteful number, since it uses less digits than its factorization.
30008145612 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 147098777 (or 147098775 counting only the distinct ones).
The product of its (nonzero) digits is 5760, while the sum is 30.
The spelling of 30008145612 in words is "thirty billion, eight million, one hundred forty-five thousand, six hundred twelve".
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