Base | Representation |
---|---|
bin | 111001111011… |
… | …1110001110001 |
3 | 2010011012200221 |
4 | 1303313301301 |
5 | 30234000100 |
6 | 3003013041 |
7 | 516116632 |
oct | 163676161 |
9 | 63135627 |
10 | 30375025 |
11 | 1616722a |
12 | a20a181 |
13 | 63a68b5 |
14 | 4069889 |
15 | 2a0001a |
hex | 1cf7c71 |
30375025 has 12 divisors (see below), whose sum is σ = 37734192. Its totient is φ = 24255440.
The previous prime is 30375013. The next prime is 30375041. The reversal of 30375025 is 52057303.
It is not a de Polignac number, because 30375025 - 211 = 30372977 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (25).
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23034 + ... + 24316.
It is an arithmetic number, because the mean of its divisors is an integer number (3144516).
Almost surely, 230375025 is an apocalyptic number.
It is an amenable number.
30375025 is a deficient number, since it is larger than the sum of its proper divisors (7359167).
30375025 is a wasteful number, since it uses less digits than its factorization.
30375025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2240 (or 2235 counting only the distinct ones).
The product of its (nonzero) digits is 3150, while the sum is 25.
The square root of 30375025 is about 5511.3541893077. The cubic root of 30375025 is about 312.0126590579.
The spelling of 30375025 in words is "thirty million, three hundred seventy-five thousand, twenty-five".
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