Base | Representation |
---|---|
bin | 111011100101011 |
3 | 1112211220 |
4 | 13130223 |
5 | 1434012 |
6 | 353123 |
7 | 154641 |
oct | 73453 |
9 | 45756 |
10 | 30507 |
11 | 20a14 |
12 | 157a3 |
13 | 10b69 |
14 | b191 |
15 | 908c |
hex | 772b |
30507 has 4 divisors (see below), whose sum is σ = 40680. Its totient is φ = 20336.
The previous prime is 30497. The next prime is 30509. The reversal of 30507 is 70503.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 30507 - 24 = 30491 is a prime.
It is a D-number.
It is an alternating number because its digits alternate between odd and even.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30507.
It is not an unprimeable number, because it can be changed into a prime (30509) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5082 + ... + 5087.
It is an arithmetic number, because the mean of its divisors is an integer number (10170).
230507 is an apocalyptic number.
30507 is a deficient number, since it is larger than the sum of its proper divisors (10173).
30507 is a wasteful number, since it uses less digits than its factorization.
30507 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10172.
The product of its (nonzero) digits is 105, while the sum is 15.
The square root of 30507 is about 174.6625317577. The cubic root of 30507 is about 31.2463889161.
The spelling of 30507 in words is "thirty thousand, five hundred seven".
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