Base | Representation |
---|---|
bin | 11100011101001111… |
… | …000010100001000101 |
3 | 2220212110002200000211 |
4 | 130131033002201011 |
5 | 1000034121042210 |
6 | 22011545035421 |
7 | 2131121235460 |
oct | 343517024105 |
9 | 86773080024 |
10 | 30555252805 |
11 | 11a5a709750 |
12 | 5b08a85b71 |
13 | 2b5c42445c |
14 | 169c0a42d7 |
15 | bdc75838a |
hex | 71d3c2845 |
30555252805 has 16 divisors (see below), whose sum is σ = 45713833344. Its totient is φ = 19047430080.
The previous prime is 30555252797. The next prime is 30555252809. The reversal of 30555252805 is 50825255503.
It is not a de Polignac number, because 30555252805 - 23 = 30555252797 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30555252809) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39681762 + ... + 39682531.
It is an arithmetic number, because the mean of its divisors is an integer number (2857114584).
Almost surely, 230555252805 is an apocalyptic number.
30555252805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
It is an amenable number.
30555252805 is a deficient number, since it is larger than the sum of its proper divisors (15158580539).
30555252805 is a wasteful number, since it uses less digits than its factorization.
30555252805 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 79364316.
The product of its (nonzero) digits is 300000, while the sum is 40.
The spelling of 30555252805 in words is "thirty billion, five hundred fifty-five million, two hundred fifty-two thousand, eight hundred five".
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