Base | Representation |
---|---|
bin | 111001011111… |
… | …1001011000000 |
3 | 2002201102122122 |
4 | 1302333023000 |
5 | 30204040133 |
6 | 2554023412 |
7 | 514132646 |
oct | 162771300 |
9 | 62642578 |
10 | 30143168 |
11 | 16019010 |
12 | a117b68 |
13 | 63251c3 |
14 | 4009196 |
15 | 29a6498 |
hex | 1cbf2c0 |
30143168 has 56 divisors (see below), whose sum is σ = 66714624. Its totient is φ = 13395200.
The previous prime is 30143153. The next prime is 30143173. The reversal of 30143168 is 86134103.
It is a super-2 number, since 2×301431682 = 1817221154152448, which contains 22 as substring.
It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.
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 7 ways as a sum of consecutive naturals, for example, 32633 + ... + 33543.
Almost surely, 230143168 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 30143168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33357312).
30143168 is an abundant number, since it is smaller than the sum of its proper divisors (36571456).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30143168 is a wasteful number, since it uses less digits than its factorization.
30143168 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 981 (or 971 counting only the distinct ones).
The product of its (nonzero) digits is 1728, while the sum is 26.
The square root of 30143168 is about 5490.2794100118. The cubic root of 30143168 is about 311.2167511244.
The spelling of 30143168 in words is "thirty million, one hundred forty-three thousand, one hundred sixty-eight".
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