Base | Representation |
---|---|
bin | 111010101110… |
… | …0110110001110 |
3 | 2010221020120120 |
4 | 1311130312032 |
5 | 30340222011 |
6 | 3015525410 |
7 | 522462603 |
oct | 165346616 |
9 | 63836516 |
10 | 30789006 |
11 | 1641a266 |
12 | a389866 |
13 | 64c0161 |
14 | 41366aa |
15 | 2a82a06 |
hex | 1d5cd8e |
30789006 has 32 divisors (see below), whose sum is σ = 68636160. Its totient is φ = 9150336.
The previous prime is 30789001. The next prime is 30789007. The reversal of 30789006 is 60098703.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30789001) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6006 + ... + 9881.
It is an arithmetic number, because the mean of its divisors is an integer number (2144880).
Almost surely, 230789006 is an apocalyptic number.
30789006 is an abundant number, since it is smaller than the sum of its proper divisors (37847154).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30789006 is a wasteful number, since it uses less digits than its factorization.
30789006 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15928.
The product of its (nonzero) digits is 9072, while the sum is 33.
The square root of 30789006 is about 5548.7841911540. The cubic root of 30789006 is about 313.4237405736.
The spelling of 30789006 in words is "thirty million, seven hundred eighty-nine thousand, six".
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