Base | Representation |
---|---|
bin | 11100101110010101… |
… | …010011001100111101 |
3 | 2221121102212100120121 |
4 | 130232111103030331 |
5 | 1001131034403220 |
6 | 22100233214541 |
7 | 2141203403245 |
oct | 345625231475 |
9 | 87542770517 |
10 | 30842106685 |
11 | 12097624275 |
12 | 5b88b61451 |
13 | 2ba699b690 |
14 | 16c8214b25 |
15 | c07a1beaa |
hex | 72e55333d |
30842106685 has 32 divisors (see below), whose sum is σ = 40873472640. Its totient is φ = 22197466368.
The previous prime is 30842106683. The next prime is 30842106697. The reversal of 30842106685 is 58660124803.
It is a cyclic number.
It is not a de Polignac number, because 30842106685 - 21 = 30842106683 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (43).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30842106683) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1293451 + ... + 1317079.
It is an arithmetic number, because the mean of its divisors is an integer number (1277296020).
Almost surely, 230842106685 is an apocalyptic number.
It is an amenable number.
30842106685 is a deficient number, since it is larger than the sum of its proper divisors (10031365955).
30842106685 is a wasteful number, since it uses less digits than its factorization.
30842106685 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 24157.
The product of its (nonzero) digits is 276480, while the sum is 43.
The spelling of 30842106685 in words is "thirty billion, eight hundred forty-two million, one hundred six thousand, six hundred eighty-five".
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