Base | Representation |
---|---|
bin | 1110111101000010… |
… | …10001011101100000 |
3 | 202201111112102021011 |
4 | 13132201101131200 |
5 | 112420211402040 |
6 | 3404344510304 |
7 | 402642561541 |
oct | 73641213540 |
9 | 22644472234 |
10 | 8028231520 |
11 | 344a800191 |
12 | 168077b394 |
13 | 9ac34916a |
14 | 5623364c8 |
15 | 31ec253ea |
hex | 1de851760 |
8028231520 has 48 divisors (see below), whose sum is σ = 19016363520. Its totient is φ = 3202883584.
The previous prime is 8028231503. The next prime is 8028231529. The reversal of 8028231520 is 251328208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8028231529) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4225 + ... + 126784.
It is an arithmetic number, because the mean of its divisors is an integer number (396174240).
Almost surely, 28028231520 is an apocalyptic number.
8028231520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
8028231520 is an abundant number, since it is smaller than the sum of its proper divisors (10988132000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8028231520 is a wasteful number, since it uses less digits than its factorization.
8028231520 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 131407 (or 131399 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 31.
The square root of 8028231520 is about 89600.3991062540. The cubic root of 8028231520 is about 2002.3498646534.
Adding to 8028231520 its reverse (251328208), we get a palindrome (8279559728).
The spelling of 8028231520 in words is "eight billion, twenty-eight million, two hundred thirty-one thousand, five hundred twenty".
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