Base | Representation |
---|---|
bin | 111011000110… |
… | …0110001100011 |
3 | 2011022012212021 |
4 | 1312030301203 |
5 | 30413012230 |
6 | 3024042311 |
7 | 524241124 |
oct | 166146143 |
9 | 64265767 |
10 | 30985315 |
11 | 165437a9 |
12 | a463397 |
13 | 655b60a |
14 | 418804b |
15 | 2ac0c7a |
hex | 1d8cc63 |
30985315 has 8 divisors (see below), whose sum is σ = 37250928. Its totient is φ = 24742560.
The previous prime is 30985313. The next prime is 30985343. The reversal of 30985315 is 51358903.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30985315 - 21 = 30985313 is a prime.
It is a super-3 number, since 3×309853153 (a number of 23 digits) contains 333 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30985313) 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, 2572 + ... + 8281.
It is an arithmetic number, because the mean of its divisors is an integer number (4656366).
Almost surely, 230985315 is an apocalyptic number.
30985315 is a deficient number, since it is larger than the sum of its proper divisors (6265613).
30985315 is a wasteful number, since it uses less digits than its factorization.
30985315 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11429.
The product of its (nonzero) digits is 16200, while the sum is 34.
The square root of 30985315 is about 5566.4454546865. The cubic root of 30985315 is about 314.0884539907.
The spelling of 30985315 in words is "thirty million, nine hundred eighty-five thousand, three hundred fifteen".
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