Base | Representation |
---|---|
bin | 111010011111… |
… | …0000101000100 |
3 | 2010200211200221 |
4 | 1310332011010 |
5 | 30322203410 |
6 | 3013114124 |
7 | 521426305 |
oct | 164760504 |
9 | 63624627 |
10 | 30662980 |
11 | 16343607 |
12 | a328944 |
13 | 647799a |
14 | 41027ac |
15 | 2a5a4da |
hex | 1d3e144 |
30662980 has 24 divisors (see below), whose sum is σ = 64576512. Its totient is φ = 12230112.
The previous prime is 30662969. The next prime is 30662987. The reversal of 30662980 is 8926603.
It is a happy number.
It is not an unprimeable number, because it can be changed into a prime (30662987) 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, 5659 + ... + 9661.
It is an arithmetic number, because the mean of its divisors is an integer number (2690688).
Almost surely, 230662980 is an apocalyptic number.
It is an amenable number.
30662980 is an abundant number, since it is smaller than the sum of its proper divisors (33913532).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30662980 is a wasteful number, since it uses less digits than its factorization.
30662980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4395 (or 4393 counting only the distinct ones).
The product of its (nonzero) digits is 15552, while the sum is 34.
The square root of 30662980 is about 5537.4163650569. The cubic root of 30662980 is about 312.9955189265.
The spelling of 30662980 in words is "thirty million, six hundred sixty-two thousand, nine hundred eighty".
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