Base | Representation |
---|---|
bin | 111011000110… |
… | …0111111101111 |
3 | 2011022021002220 |
4 | 1312030333233 |
5 | 30413024343 |
6 | 3024050423 |
7 | 524243562 |
oct | 166147757 |
9 | 64267086 |
10 | 30986223 |
11 | 16544454 |
12 | a463a13 |
13 | 655bb58 |
14 | 41884d9 |
15 | 2ac1183 |
hex | 1d8cfef |
30986223 has 8 divisors (see below), whose sum is σ = 43745328. Its totient is φ = 19442304.
The previous prime is 30986213. The next prime is 30986243. The reversal of 30986223 is 32268903.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30986223 - 25 = 30986191 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30986213) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303736 + ... + 303837.
It is an arithmetic number, because the mean of its divisors is an integer number (5468166).
Almost surely, 230986223 is an apocalyptic number.
30986223 is a deficient number, since it is larger than the sum of its proper divisors (12759105).
30986223 is a wasteful number, since it uses less digits than its factorization.
30986223 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 607593.
The product of its (nonzero) digits is 15552, while the sum is 33.
The square root of 30986223 is about 5566.5270142163. The cubic root of 30986223 is about 314.0915219981.
The spelling of 30986223 in words is "thirty million, nine hundred eighty-six thousand, two hundred twenty-three".
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