Base | Representation |
---|---|
bin | 111001001110… |
… | …0100100010001 |
3 | 2002110020012220 |
4 | 1302130210101 |
5 | 30140021200 |
6 | 2551011253 |
7 | 513002466 |
oct | 162344421 |
9 | 62406186 |
10 | 30001425 |
11 | 15a31573 |
12 | a069b29 |
13 | 62a582c |
14 | 3dad66d |
15 | 29794a0 |
hex | 1c9c911 |
30001425 has 24 divisors (see below), whose sum is σ = 49791456. Its totient is φ = 15939840.
The previous prime is 30001403. The next prime is 30001427. The reversal of 30001425 is 52410003.
It is not a de Polignac number, because 30001425 - 27 = 30001297 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is not an unprimeable number, because it can be changed into a prime (30001427) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24682 + ... + 25868.
It is an arithmetic number, because the mean of its divisors is an integer number (2074644).
Almost surely, 230001425 is an apocalyptic number.
It is an amenable number.
30001425 is a deficient number, since it is larger than the sum of its proper divisors (19790031).
30001425 is a wasteful number, since it uses less digits than its factorization.
30001425 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1537 (or 1532 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 30001425 is about 5477.3556576144. The cubic root of 30001425 is about 310.7281703023.
Adding to 30001425 its reverse (52410003), we get a palindrome (82411428).
The spelling of 30001425 in words is "thirty million, one thousand, four hundred twenty-five".
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