Base | Representation |
---|---|
bin | 111010110000… |
… | …1110000010011 |
3 | 2010222021011001 |
4 | 1311201300103 |
5 | 30341342412 |
6 | 3020202431 |
7 | 522605320 |
oct | 165416023 |
9 | 63867131 |
10 | 30809107 |
11 | 1643337a |
12 | a399417 |
13 | 64c9354 |
14 | 413db47 |
15 | 2a88957 |
hex | 1d61c13 |
30809107 has 8 divisors (see below), whose sum is σ = 36424800. Its totient is φ = 25497024.
The previous prime is 30809099. The next prime is 30809137. The reversal of 30809107 is 70190803.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30809107 - 23 = 30809099 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30809137) 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, 75682 + ... + 76087.
It is an arithmetic number, because the mean of its divisors is an integer number (4553100).
Almost surely, 230809107 is an apocalyptic number.
30809107 is a deficient number, since it is larger than the sum of its proper divisors (5615693).
30809107 is a wasteful number, since it uses less digits than its factorization.
30809107 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 151805.
The product of its (nonzero) digits is 1512, while the sum is 28.
The square root of 30809107 is about 5550.5951933104. The cubic root of 30809107 is about 313.4919333138.
The spelling of 30809107 in words is "thirty million, eight hundred nine thousand, one hundred seven".
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