Base | Representation |
---|---|
bin | 11100101100001001… |
… | …000110011110000000 |
3 | 2221111212201010212200 |
4 | 130230021012132000 |
5 | 1001042132314433 |
6 | 22052441353200 |
7 | 2140246122525 |
oct | 345411063600 |
9 | 87455633780 |
10 | 30805354368 |
11 | 12078901758 |
12 | 5b78798800 |
13 | 2b9c1a1149 |
14 | 16c33a914c |
15 | c046ac613 |
hex | 72c246780 |
30805354368 has 96 divisors (see below), whose sum is σ = 89135974200. Its totient is φ = 10211650560.
The previous prime is 30805354361. The next prime is 30805354421. The reversal of 30805354368 is 86345350803.
30805354368 is a `hidden beast` number, since 3 + 0 + 80 + 535 + 4 + 36 + 8 = 666.
It is a tau number, because it is divible by the number of its divisors (96).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30805354361) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134643 + ... + 282381.
Almost surely, 230805354368 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30805354368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44567987100).
30805354368 is an abundant number, since it is smaller than the sum of its proper divisors (58330619832).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30805354368 is a wasteful number, since it uses less digits than its factorization.
30805354368 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 147940 (or 147925 counting only the distinct ones).
The product of its (nonzero) digits is 1036800, while the sum is 45.
The spelling of 30805354368 in words is "thirty billion, eight hundred five million, three hundred fifty-four thousand, three hundred sixty-eight".
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