Base | Representation |
---|---|
bin | 1111001001001011… |
… | …00110110101000000 |
3 | 202222121002100210000 |
4 | 13210211212311000 |
5 | 113122241442122 |
6 | 3422422440000 |
7 | 405320060013 |
oct | 74445466500 |
9 | 22877070700 |
10 | 8130030912 |
11 | 34a2210613 |
12 | 16aa893000 |
13 | 9c746c9a3 |
14 | 571a7537a |
15 | 328b330ac |
hex | 1e4966d40 |
8130030912 has 70 divisors (see below), whose sum is σ = 24099973898. Its totient is φ = 2710008576.
The previous prime is 8130030899. The next prime is 8130030919. The reversal of 8130030912 is 2190300318.
It can be written as a sum of positive squares in only one way, i.e., 4454761536 + 3675269376 = 66744^2 + 60624^2 .
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8130030919) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 778963 + ... + 789330.
Almost surely, 28130030912 is an apocalyptic number.
It is an amenable number.
8130030912 is an abundant number, since it is smaller than the sum of its proper divisors (15969942986).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8130030912 is a wasteful number, since it uses less digits than its factorization.
8130030912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1568317 (or 1568298 counting only the distinct ones).
The product of its (nonzero) digits is 1296, while the sum is 27.
The square root of 8130030912 is about 90166.6840468252. The cubic root of 8130030912 is about 2010.7777253239. Note that the first 4 decimals are identical.
The spelling of 8130030912 in words is "eight billion, one hundred thirty million, thirty thousand, nine hundred twelve".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •