Base | Representation |
---|---|
bin | 111010110000… |
… | …1011111000111 |
3 | 2010222012122022 |
4 | 1311201133013 |
5 | 30341324012 |
6 | 3020153355 |
7 | 522602156 |
oct | 165413707 |
9 | 63865568 |
10 | 30808007 |
11 | 1643256a |
12 | a39885b |
13 | 64c89b9 |
14 | 413d59d |
15 | 2a88472 |
hex | 1d617c7 |
30808007 has 6 divisors (see below), whose sum is σ = 31279248. Its totient is φ = 30343764.
The previous prime is 30808003. The next prime is 30808027. The reversal of 30808007 is 70080803.
It is not a de Polignac number, because 30808007 - 22 = 30808003 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30808003) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1058 + ... + 7920.
It is an arithmetic number, because the mean of its divisors is an integer number (5213208).
Almost surely, 230808007 is an apocalyptic number.
30808007 is a deficient number, since it is larger than the sum of its proper divisors (471241).
30808007 is an frugal number, since it uses more digits than its factorization.
30808007 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6997 (or 6930 counting only the distinct ones).
The product of its (nonzero) digits is 1344, while the sum is 26.
The square root of 30808007 is about 5550.4961039532. The cubic root of 30808007 is about 313.4882023258.
The spelling of 30808007 in words is "thirty million, eight hundred eight thousand, seven".
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