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6830305 = 58915349
BaseRepresentation
bin11010000011100011100001
3110212000102021
4122003203201
53222032210
6402221441
7112025266
oct32034341
913760367
106830305
113945789
122354881
131551c01
14c9b26d
158edbda
hex6838e1

6830305 has 8 divisors (see below), whose sum is σ = 8289000. Its totient is φ = 5402496.

The previous prime is 6830303. The next prime is 6830339. The reversal of 6830305 is 5030386.

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 6796449 = 184^2 + 2607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6830305 - 21 = 6830303 is a prime.

6830305 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6830305.

It is not an unprimeable number, because it can be changed into a prime (6830303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7230 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (1036125).

Almost surely, 26830305 is an apocalyptic number.

It is an amenable number.

6830305 is a deficient number, since it is larger than the sum of its proper divisors (1458695).

6830305 is a wasteful number, since it uses less digits than its factorization.

6830305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15443.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6830305 is about 2613.4852209263. The cubic root of 6830305 is about 189.7346712007.

The spelling of 6830305 in words is "six million, eight hundred thirty thousand, three hundred five".

Divisors: 1 5 89 445 15349 76745 1366061 6830305