Base | Representation |
---|---|
bin | 11100001100100011… |
… | …000001111110100101 |
3 | 2220010221021121122111 |
4 | 130030203001332211 |
5 | 444000432441210 |
6 | 21524104201021 |
7 | 2121151432540 |
oct | 341443017645 |
9 | 86127247574 |
10 | 30275280805 |
11 | 11926674630 |
12 | 5a4b169171 |
13 | 2b16419753 |
14 | 1672c25857 |
15 | bc2da388a |
hex | 70c8c1fa5 |
30275280805 has 16 divisors (see below), whose sum is σ = 45294966144. Its totient is φ = 18872902080.
The previous prime is 30275280799. The next prime is 30275280823. The reversal of 30275280805 is 50808257203.
It is not a de Polignac number, because 30275280805 - 217 = 30275149733 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39318162 + ... + 39318931.
It is an arithmetic number, because the mean of its divisors is an integer number (2830935384).
Almost surely, 230275280805 is an apocalyptic number.
30275280805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
It is an amenable number.
30275280805 is a deficient number, since it is larger than the sum of its proper divisors (15019685339).
30275280805 is a wasteful number, since it uses less digits than its factorization.
30275280805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 78637116.
The product of its (nonzero) digits is 134400, while the sum is 40.
The spelling of 30275280805 in words is "thirty billion, two hundred seventy-five million, two hundred eighty thousand, eight hundred five".
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