Base | Representation |
---|---|
bin | 1111101011110011… |
… | …00111010100100000 |
3 | 210201211122010122201 |
4 | 13311321213110200 |
5 | 114221121112410 |
6 | 3511320142544 |
7 | 415444654045 |
oct | 76571472440 |
9 | 23654563581 |
10 | 8420488480 |
11 | 3631167698 |
12 | 1770007a54 |
13 | a426a9281 |
14 | 59c4831cc |
15 | 3443a983a |
hex | 1f5e67520 |
8420488480 has 48 divisors (see below), whose sum is σ = 19919564280. Its totient is φ = 3363766272.
The previous prime is 8420488477. The next prime is 8420488481. The reversal of 8420488480 is 848840248.
It can be written as a sum of positive squares in 4 ways, for example, as 6673582864 + 1746905616 = 81692^2 + 41796^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 8420488480.
It is not an unprimeable number, because it can be changed into a prime (8420488481) 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, 88822 + ... + 157258.
Almost surely, 28420488480 is an apocalyptic number.
8420488480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
8420488480 is an abundant number, since it is smaller than the sum of its proper divisors (11499075800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8420488480 is a wasteful number, since it uses less digits than its factorization.
8420488480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 69221 (or 69213 counting only the distinct ones).
The product of its (nonzero) digits is 524288, while the sum is 46.
The square root of 8420488480 is about 91763.2196470895. The cubic root of 8420488480 is about 2034.4441031818. Note that the first 3 decimals are identical.
The spelling of 8420488480 in words is "eight billion, four hundred twenty million, four hundred eighty-eight thousand, four hundred eighty".
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