Base | Representation |
---|---|
bin | 111001001110… |
… | …0101100000111 |
3 | 2002110020220111 |
4 | 1302130230013 |
5 | 30140030202 |
6 | 2551013451 |
7 | 513004114 |
oct | 162345407 |
9 | 62406814 |
10 | 30001927 |
11 | 15a3198a |
12 | a06a287 |
13 | 62a5b27 |
14 | 3dad90b |
15 | 29796d7 |
hex | 1c9cb07 |
30001927 has 4 divisors (see below), whose sum is σ = 30363480. Its totient is φ = 29640376.
The previous prime is 30001919. The next prime is 30001981. The reversal of 30001927 is 72910003.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72910003 = 67 ⋅1088209.
It is a cyclic number.
It is not a de Polignac number, because 30001927 - 23 = 30001919 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30001898 and 30001907.
It is a congruent number.
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 (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180652 + ... + 180817.
It is an arithmetic number, because the mean of its divisors is an integer number (7590870).
Almost surely, 230001927 is an apocalyptic number.
30001927 is a deficient number, since it is larger than the sum of its proper divisors (361553).
30001927 is an equidigital number, since it uses as much as digits as its factorization.
30001927 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 361552.
The product of its (nonzero) digits is 378, while the sum is 22.
The square root of 30001927 is about 5477.4014824550. The cubic root of 30001927 is about 310.7299033830.
The spelling of 30001927 in words is "thirty million, one thousand, nine hundred twenty-seven".
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