Base | Representation |
---|---|
bin | 111010111011… |
… | …0001111001000 |
3 | 2011010112020012 |
4 | 1311312033020 |
5 | 30402034000 |
6 | 3022051052 |
7 | 523405025 |
oct | 165661710 |
9 | 64115205 |
10 | 30893000 |
11 | 16490406 |
12 | a419a88 |
13 | 65285a8 |
14 | 416254c |
15 | 2aa3735 |
hex | 1d763c8 |
30893000 has 32 divisors (see below), whose sum is σ = 72291960. Its totient is φ = 12356800.
The previous prime is 30892999. The next prime is 30893003. The reversal of 30893000 is 39803.
It can be written as a sum of positive squares in 4 ways, for example, as 7409284 + 23483716 = 2722^2 + 4846^2 .
It is not an unprimeable number, because it can be changed into a prime (30893003) 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, 14447 + ... + 16446.
Almost surely, 230893000 is an apocalyptic number.
It is an amenable number.
30893000 is an abundant number, since it is smaller than the sum of its proper divisors (41398960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30893000 is a wasteful number, since it uses less digits than its factorization.
30893000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30914 (or 30900 counting only the distinct ones).
The product of its (nonzero) digits is 648, while the sum is 23.
The square root of 30893000 is about 5558.1471732944. The cubic root of 30893000 is about 313.7762209373.
The spelling of 30893000 in words is "thirty million, eight hundred ninety-three thousand".
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