Base | Representation |
---|---|
bin | 11100001101001010… |
… | …000101110001100111 |
3 | 2220011122112211011000 |
4 | 130031022011301213 |
5 | 444011043114400 |
6 | 21525111444343 |
7 | 2121334446414 |
oct | 341512056147 |
9 | 86148484130 |
10 | 30285519975 |
11 | 11931428457 |
12 | 5a526866b3 |
13 | 2b18593129 |
14 | 167432d10b |
15 | bc3c27600 |
hex | 70d285c67 |
30285519975 has 96 divisors (see below), whose sum is σ = 60940296000. Its totient is φ = 14677770240.
The previous prime is 30285519961. The next prime is 30285519983. The reversal of 30285519975 is 57991558203.
30285519975 is a `hidden beast` number, since 30 + 2 + 8 + 5 + 519 + 97 + 5 = 666.
It is not a de Polignac number, because 30285519975 - 29 = 30285519463 is a prime.
It is a super-3 number, since 3×302855199753 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
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 95 ways as a sum of consecutive naturals, for example, 287271 + ... + 378279.
It is an arithmetic number, because the mean of its divisors is an integer number (634794750).
Almost surely, 230285519975 is an apocalyptic number.
30285519975 is an abundant number, since it is smaller than the sum of its proper divisors (30654776025).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30285519975 is a wasteful number, since it uses less digits than its factorization.
30285519975 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 91074 (or 91063 counting only the distinct ones).
The product of its (nonzero) digits is 3402000, while the sum is 54.
The spelling of 30285519975 in words is "thirty billion, two hundred eighty-five million, five hundred nineteen thousand, nine hundred seventy-five".
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