Base | Representation |
---|---|
bin | 11100011010111111… |
… | …010100100110001101 |
3 | 2220202211012121002022 |
4 | 130122333110212031 |
5 | 1000000000000000 |
6 | 22004121335525 |
7 | 2130153063656 |
oct | 343277244615 |
9 | 86684177068 |
10 | 30517578125 |
11 | 11a40417151 |
12 | 5ab83375a5 |
13 | 2b54693148 |
14 | 169709852d |
15 | bd92b5585 |
hex | 71afd498d |
30517578125 has 16 divisors (see below), whose sum is σ = 38146972656. Its totient is φ = 24414062500.
The previous prime is 30517578121. The next prime is 30517578167. The reversal of 30517578125 is 52187571503.
The cubic root of 30517578125 is 3125.
It is a perfect power (a cube, a 5-th power, a 15-th power), and thus also a powerful number.
It can be written as a sum of positive squares in 8 ways, for example, as 18703844644 + 11813733481 = 136762^2 + 108691^2 .
It is not a de Polignac number, because 30517578125 - 22 = 30517578121 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 5.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30517578121) 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, 6103515623 + ... + 6103515627.
It is an arithmetic number, because the mean of its divisors is an integer number (2384185791).
Almost surely, 230517578125 is an apocalyptic number.
It is an amenable number.
30517578125 is a deficient number, since it is larger than the sum of its proper divisors (7629394531).
30517578125 is an frugal number, since it uses more digits than its factorization.
30517578125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 75 (or 5 counting only the distinct ones).
The product of its (nonzero) digits is 294000, while the sum is 44.
The spelling of 30517578125 in words is "thirty billion, five hundred seventeen million, five hundred seventy-eight thousand, one hundred twenty-five".
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