Base | Representation |
---|---|
bin | 111001001110… |
… | …0001110000110 |
3 | 2002110011021100 |
4 | 1302130032012 |
5 | 30140000011 |
6 | 2551000530 |
7 | 512665401 |
oct | 162341606 |
9 | 62404240 |
10 | 30000006 |
11 | 15a304a3 |
12 | a069146 |
13 | 62a4caa |
14 | 3dacd38 |
15 | 2978d56 |
hex | 1c9c386 |
30000006 has 24 divisors (see below), whose sum is σ = 66384864. Its totient is φ = 9786960.
The previous prime is 30000001. The next prime is 30000023. The reversal of 30000006 is 60000003.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30000001) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16885 + ... + 18576.
It is an arithmetic number, because the mean of its divisors is an integer number (2766036).
Almost surely, 230000006 is an apocalyptic number.
30000006 is an abundant number, since it is smaller than the sum of its proper divisors (36384858).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30000006 is a wasteful number, since it uses less digits than its factorization.
30000006 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35516 (or 35513 counting only the distinct ones).
The product of its (nonzero) digits is 18, while the sum is 9.
The square root of 30000006 is about 5477.2261227742. The cubic root of 30000006 is about 310.7232713103.
Adding to 30000006 its reverse (60000003), we get a palindrome (90000009).
The spelling of 30000006 in words is "thirty million, six", and thus it is an aban number, an eban number, and an uban number.
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