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830758085 = 5612723797
BaseRepresentation
bin110001100001000…
…101110011000101
32010220012212211222
4301201011303011
53200133224320
6214234010125
726405220143
oct6141056305
92126185758
10830758085
11396a39933
121b2276945
13103161c41
147c494593
154ce00825
hex31845cc5

830758085 has 8 divisors (see below), whose sum is σ = 1013252856. Its totient is φ = 653711040.

The previous prime is 830758081. The next prime is 830758087. The reversal of 830758085 is 580857038.

It can be written as a sum of positive squares in 4 ways, for example, as 6895876 + 823862209 = 2626^2 + 28703^2 .

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

It is not a de Polignac number, because 830758085 - 22 = 830758081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830758081) 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 7 ways as a sum of consecutive naturals, for example, 1361594 + ... + 1362203.

It is an arithmetic number, because the mean of its divisors is an integer number (126656607).

Almost surely, 2830758085 is an apocalyptic number.

It is an amenable number.

830758085 is a deficient number, since it is larger than the sum of its proper divisors (182494771).

830758085 is a wasteful number, since it uses less digits than its factorization.

830758085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723863.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 830758085 is about 28822.8743361935. The cubic root of 830758085 is about 940.0656680395.

The spelling of 830758085 in words is "eight hundred thirty million, seven hundred fifty-eight thousand, eighty-five".

Divisors: 1 5 61 305 2723797 13618985 166151617 830758085