Base | Representation |
---|---|
bin | 111010111000… |
… | …0001011100011 |
3 | 2011002021012111 |
4 | 1311300023203 |
5 | 30400240240 |
6 | 3021340151 |
7 | 523242511 |
oct | 165601343 |
9 | 64067174 |
10 | 30868195 |
11 | 16473806 |
12 | a407657 |
13 | 651a207 |
14 | 41574b1 |
15 | 2a9b1ea |
hex | 1d702e3 |
30868195 has 8 divisors (see below), whose sum is σ = 37903536. Its totient is φ = 24120096.
The previous prime is 30868193. The next prime is 30868199. The reversal of 30868195 is 59186803.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30868195 - 21 = 30868193 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30868193) by changing a digit.
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, 71572 + ... + 72001.
It is an arithmetic number, because the mean of its divisors is an integer number (4737942).
Almost surely, 230868195 is an apocalyptic number.
30868195 is a deficient number, since it is larger than the sum of its proper divisors (7035341).
30868195 is a wasteful number, since it uses less digits than its factorization.
30868195 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 143621.
The product of its (nonzero) digits is 51840, while the sum is 40.
The square root of 30868195 is about 5555.9153161293. The cubic root of 30868195 is about 313.6922180540.
The spelling of 30868195 in words is "thirty million, eight hundred sixty-eight thousand, one hundred ninety-five".
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