Base | Representation |
---|---|
bin | 111010111111… |
… | …1010100010011 |
3 | 2011012102020210 |
4 | 1311333110103 |
5 | 30404231240 |
6 | 3022535203 |
7 | 523621332 |
oct | 165772423 |
9 | 64172223 |
10 | 30930195 |
11 | 1650634a |
12 | a437503 |
13 | 653c4ba |
14 | 4171d19 |
15 | 2aae780 |
hex | 1d7f513 |
30930195 has 32 divisors (see below), whose sum is σ = 53383680. Its totient is φ = 15240960.
The previous prime is 30930143. The next prime is 30930203. The reversal of 30930195 is 59103903.
It is not a de Polignac number, because 30930195 - 26 = 30930131 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10362 + ... + 13008.
It is an arithmetic number, because the mean of its divisors is an integer number (1668240).
Almost surely, 230930195 is an apocalyptic number.
30930195 is a deficient number, since it is larger than the sum of its proper divisors (22453485).
30930195 is a wasteful number, since it uses less digits than its factorization.
30930195 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2715.
The product of its (nonzero) digits is 3645, while the sum is 30.
The square root of 30930195 is about 5561.4921558877. The cubic root of 30930195 is about 313.9020987065.
It can be divided in two parts, 30930 and 195, that added together give a triangular number (31125 = T249).
The spelling of 30930195 in words is "thirty million, nine hundred thirty thousand, one hundred ninety-five".
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