Base | Representation |
---|---|
bin | 111001101010… |
… | …0101010000000 |
3 | 2002212220100220 |
4 | 1303110222000 |
5 | 30214344133 |
6 | 2555543040 |
7 | 514650342 |
oct | 163245200 |
9 | 62786326 |
10 | 30231168 |
11 | 16079140 |
12 | a15aa80 |
13 | 6356286 |
14 | 402d292 |
15 | 29c25b3 |
hex | 1cd4a80 |
30231168 has 128 divisors (see below), whose sum is σ = 92975040. Its totient is φ = 8601600.
The previous prime is 30231133. The next prime is 30231181. The reversal of 30231168 is 86113203.
It is a tau number, because it is divible by the number of its divisors (128).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71598 + ... + 72018.
Almost surely, 230231168 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 30231168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46487520).
30231168 is an abundant number, since it is smaller than the sum of its proper divisors (62743872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30231168 is a wasteful number, since it uses less digits than its factorization.
30231168 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 466 (or 454 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 24.
The square root of 30231168 is about 5498.2877334676. The cubic root of 30231168 is about 311.5193123986.
The spelling of 30231168 in words is "thirty million, two hundred thirty-one thousand, one hundred sixty-eight".
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