Base | Representation |
---|---|
bin | 11100101100000001… |
… | …101011100010111000 |
3 | 2221111202001022102222 |
4 | 130230001223202320 |
5 | 1001041133042310 |
6 | 22052331543212 |
7 | 2140223441243 |
oct | 345401534270 |
9 | 87452038388 |
10 | 30803409080 |
11 | 120777a3184 |
12 | 5b77bbab08 |
13 | 2b9b96c8a2 |
14 | 16c302025a |
15 | c04426055 |
hex | 72c06b8b8 |
30803409080 has 128 divisors (see below), whose sum is σ = 76772448000. Its totient is φ = 11070259200.
The previous prime is 30803409079. The next prime is 30803409103. The reversal of 30803409080 is 8090430803.
It is a Cunningham number, because it is equal to 1755092-1.
It is a self number, because there is not a number n which added to its sum of digits gives 30803409080.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1746305 + ... + 1763855.
It is an arithmetic number, because the mean of its divisors is an integer number (599784750).
Almost surely, 230803409080 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30803409080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38386224000).
30803409080 is an abundant number, since it is smaller than the sum of its proper divisors (45969038920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30803409080 is a wasteful number, since it uses less digits than its factorization.
30803409080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17697 (or 17693 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 35.
Adding to 30803409080 its reverse (8090430803), we get a palindrome (38893839883).
The spelling of 30803409080 in words is "thirty billion, eight hundred three million, four hundred nine thousand, eighty".
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