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6805030321 = 19144817951
BaseRepresentation
bin1100101011001110…
…01000010110110001
3122120020212100200001
412111213020112301
5102414041432241
63043131230001
7330430542355
oct62547102661
918506770601
106805030321
112982298001
12139aba8301
13845ac047b
14487ac7465
1529c655431
hex1959c85b1

6805030321 has 8 divisors (see below), whose sum is σ = 6843045888. Its totient is φ = 6767040000.

The previous prime is 6805030319. The next prime is 6805030333. The reversal of 6805030321 is 1230305086.

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 6805030321 - 21 = 6805030319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6805030321.

It is not an unprimeable number, because it can be changed into a prime (6805030301) 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, 851896 + ... + 859846.

It is an arithmetic number, because the mean of its divisors is an integer number (855380736).

Almost surely, 26805030321 is an apocalyptic number.

It is an amenable number.

6805030321 is a deficient number, since it is larger than the sum of its proper divisors (38015567).

6805030321 is a wasteful number, since it uses less digits than its factorization.

6805030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12623.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6805030321 is about 82492.6076748699. The cubic root of 6805030321 is about 1895.0035222933.

The spelling of 6805030321 in words is "six billion, eight hundred five million, thirty thousand, three hundred twenty-one".

Divisors: 1 191 4481 7951 855871 1518641 35628431 6805030321