Base | Representation |
---|---|
bin | 111001111000… |
… | …1110000110011 |
3 | 2010002221220102 |
4 | 1303301300303 |
5 | 30232203022 |
6 | 3002303015 |
7 | 515655044 |
oct | 163616063 |
9 | 63087812 |
10 | 30350387 |
11 | 1614a771 |
12 | a1b7a6b |
13 | 6398612 |
14 | 40608cb |
15 | 29e7a92 |
hex | 1cf1c33 |
30350387 has 2 divisors, whose sum is σ = 30350388. Its totient is φ = 30350386.
The previous prime is 30350381. The next prime is 30350431. The reversal of 30350387 is 78305303.
It is a weak prime.
It is an emirp because it is prime and its reverse (78305303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30350387 - 216 = 30284851 is a prime.
It is a super-4 number, since 4×303503874 (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a zygodrome in base 2.
It is not a weakly prime, because it can be changed into another prime (30350381) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15175193 + 15175194.
It is an arithmetic number, because the mean of its divisors is an integer number (15175194).
Almost surely, 230350387 is an apocalyptic number.
30350387 is a deficient number, since it is larger than the sum of its proper divisors (1).
30350387 is an equidigital number, since it uses as much as digits as its factorization.
30350387 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 7560, while the sum is 29.
The square root of 30350387 is about 5509.1185320340. The cubic root of 30350387 is about 311.9282756178.
The spelling of 30350387 in words is "thirty million, three hundred fifty thousand, three hundred eighty-seven".
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