Base | Representation |
---|---|
bin | 111010001011… |
… | …0010010101000 |
3 | 2010101120010221 |
4 | 1310112102220 |
5 | 30302000013 |
6 | 3005415424 |
7 | 520150210 |
oct | 164262250 |
9 | 63346127 |
10 | 30500008 |
11 | 16242120 |
12 | a26a574 |
13 | 641b756 |
14 | 409d240 |
15 | 2a2708d |
hex | 1d164a8 |
30500008 has 64 divisors (see below), whose sum is σ = 72460800. Its totient is φ = 11689920.
The previous prime is 30500003. The next prime is 30500009. The reversal of 30500008 is 80000503.
It is a junction number, because it is equal to n+sod(n) for n = 30499964 and 30500000.
It is not an unprimeable number, because it can be changed into a prime (30500003) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40903 + ... + 41641.
It is an arithmetic number, because the mean of its divisors is an integer number (1132200).
Almost surely, 230500008 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 30500008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36230400).
30500008 is an abundant number, since it is smaller than the sum of its proper divisors (41960792).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30500008 is a wasteful number, since it uses less digits than its factorization.
30500008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 830 (or 826 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 16.
The square root of 30500008 is about 5522.6812328796. The cubic root of 30500008 is about 312.4400157935.
The spelling of 30500008 in words is "thirty million, five hundred thousand, eight".
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