Base | Representation |
---|---|
bin | 111001111100… |
… | …1011010101101 |
3 | 2010011112220200 |
4 | 1303321122231 |
5 | 30234203431 |
6 | 3003104113 |
7 | 516145335 |
oct | 163713255 |
9 | 63145820 |
10 | 30381741 |
11 | 16171285 |
12 | a212039 |
13 | 63a9980 |
14 | 406c0c5 |
15 | 2a01ee6 |
hex | 1cf96ad |
30381741 has 48 divisors (see below), whose sum is σ = 50668800. Its totient is φ = 17387136.
The previous prime is 30381739. The next prime is 30381749. The reversal of 30381741 is 14718303.
It is not a de Polignac number, because 30381741 - 21 = 30381739 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30381749) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175531 + ... + 175703.
It is an arithmetic number, because the mean of its divisors is an integer number (1055600).
Almost surely, 230381741 is an apocalyptic number.
It is an amenable number.
30381741 is a deficient number, since it is larger than the sum of its proper divisors (20287059).
30381741 is a wasteful number, since it uses less digits than its factorization.
30381741 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 290 (or 287 counting only the distinct ones).
The product of its (nonzero) digits is 2016, while the sum is 27.
The square root of 30381741 is about 5511.9634432750. The cubic root of 30381741 is about 312.0356529770.
The spelling of 30381741 in words is "thirty million, three hundred eighty-one thousand, seven hundred forty-one".
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