Base | Representation |
---|---|
bin | 111001010000… |
… | …1110110000101 |
3 | 2002111022212122 |
4 | 1302201312011 |
5 | 30141214140 |
6 | 2551255325 |
7 | 513122513 |
oct | 162416605 |
9 | 62438778 |
10 | 30023045 |
11 | 15a46838 |
12 | a07a545 |
13 | 62b2620 |
14 | 3db74b3 |
15 | 2980ab5 |
hex | 1ca1d85 |
30023045 has 16 divisors (see below), whose sum is σ = 38987760. Its totient is φ = 22063104.
The previous prime is 30023039. The next prime is 30023047. The reversal of 30023045 is 54032003.
It can be written as a sum of positive squares in 8 ways, for example, as 1014049 + 29008996 = 1007^2 + 5386^2 .
It is a cyclic number.
It is not a de Polignac number, because 30023045 - 28 = 30022789 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30023047) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13877 + ... + 15893.
It is an arithmetic number, because the mean of its divisors is an integer number (2436735).
Almost surely, 230023045 is an apocalyptic number.
It is an amenable number.
30023045 is a deficient number, since it is larger than the sum of its proper divisors (8964715).
30023045 is a wasteful number, since it uses less digits than its factorization.
30023045 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2264.
The product of its (nonzero) digits is 360, while the sum is 17.
The square root of 30023045 is about 5479.3288822629. The cubic root of 30023045 is about 310.8027926462.
Adding to 30023045 its reverse (54032003), we get a palindrome (84055048).
The spelling of 30023045 in words is "thirty million, twenty-three thousand, forty-five".
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