Base | Representation |
---|---|
bin | 10100000111100… |
… | …10011011011000 |
3 | 102202120011020220 |
4 | 22003302123120 |
5 | 321200441034 |
6 | 24425120040 |
7 | 4116323442 |
oct | 1203623330 |
9 | 382504226 |
10 | 168765144 |
11 | 87299829 |
12 | 48629020 |
13 | 28c6c242 |
14 | 185b1492 |
15 | ec39749 |
hex | a0f26d8 |
168765144 has 64 divisors (see below), whose sum is σ = 452563200. Its totient is φ = 52281216.
The previous prime is 168765139. The next prime is 168765151. The reversal of 168765144 is 441567861.
It is a junction number, because it is equal to n+sod(n) for n = 168765096 and 168765105.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20677 + ... + 27659.
It is an arithmetic number, because the mean of its divisors is an integer number (7071300).
Almost surely, 2168765144 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 168765144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226281600).
168765144 is an abundant number, since it is smaller than the sum of its proper divisors (283798056).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
168765144 is a wasteful number, since it uses less digits than its factorization.
168765144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7064 (or 7060 counting only the distinct ones).
The product of its digits is 161280, while the sum is 42.
The square root of 168765144 is about 12990.9639365214. The cubic root of 168765144 is about 552.6212549603.
The spelling of 168765144 in words is "one hundred sixty-eight million, seven hundred sixty-five thousand, one hundred forty-four".
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