Base | Representation |
---|---|
bin | 11100101101101000… |
… | …110111111111010000 |
3 | 2221120121221200112111 |
4 | 130231220313333100 |
5 | 1001120044222010 |
6 | 22055135435104 |
7 | 2141002410412 |
oct | 345550677720 |
9 | 87517850474 |
10 | 30830460880 |
11 | 12090a9a63a |
12 | 5b85085a94 |
13 | 2ba445197b |
14 | 16c68629b2 |
15 | c069bb58a |
hex | 72da37fd0 |
30830460880 has 40 divisors (see below), whose sum is σ = 71709417000. Its totient is φ = 12327264768.
The previous prime is 30830460841. The next prime is 30830460887. The reversal of 30830460880 is 8806403803.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 6378258496 + 24452202384 = 79864^2 + 156372^2 .
It is a tau number, because it is divible by the number of its divisors (40).
It is a Harshad number since it is a multiple of its sum of digits (40).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30830460887) 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, 128326 + ... + 279514.
It is an arithmetic number, because the mean of its divisors is an integer number (1792735425).
Almost surely, 230830460880 is an apocalyptic number.
It is an amenable number.
30830460880 is an abundant number, since it is smaller than the sum of its proper divisors (40878956120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30830460880 is a wasteful number, since it uses less digits than its factorization.
30830460880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 153751 (or 153745 counting only the distinct ones).
The product of its (nonzero) digits is 110592, while the sum is 40.
The spelling of 30830460880 in words is "thirty billion, eight hundred thirty million, four hundred sixty thousand, eight hundred eighty".
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