Base | Representation |
---|---|
bin | 111001010010… |
… | …0001001010111 |
3 | 2002111210210202 |
4 | 1302210021113 |
5 | 30142014341 |
6 | 2551411115 |
7 | 513162140 |
oct | 162441127 |
9 | 62453722 |
10 | 30032471 |
11 | 15a52927 |
12 | a083a9b |
13 | 62b69c1 |
14 | 3dbaac7 |
15 | 298379b |
hex | 1ca4257 |
30032471 has 8 divisors (see below), whose sum is σ = 34737024. Its totient is φ = 25431480.
The previous prime is 30032467. The next prime is 30032473. The reversal of 30032471 is 17423003.
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 30032471 - 22 = 30032467 is a prime.
It is a super-3 number, since 3×300324713 (a number of 23 digits) contains 333 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30032473) 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, 25265 + ... + 26426.
It is an arithmetic number, because the mean of its divisors is an integer number (4342128).
Almost surely, 230032471 is an apocalyptic number.
30032471 is a deficient number, since it is larger than the sum of its proper divisors (4704553).
30032471 is an equidigital number, since it uses as much as digits as its factorization.
30032471 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 51781.
The product of its (nonzero) digits is 504, while the sum is 20.
The square root of 30032471 is about 5480.1889565963. The cubic root of 30032471 is about 310.8353156696.
Adding to 30032471 its reverse (17423003), we get a palindrome (47455474).
It can be divided in two parts, 30032 and 471, that added together give a palindrome (30503).
The spelling of 30032471 in words is "thirty million, thirty-two thousand, four hundred seventy-one".
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