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6830538 = 23111319419
BaseRepresentation
bin11010000011100111001010
3110212000201220
4122003213022
53222034123
6402222510
7112026051
oct32034712
913760656
106830538
113945980
122354a36
131552050
14c9b398
158edce3
hex6839ca

6830538 has 64 divisors (see below), whose sum is σ = 16934400. Its totient is φ = 1805760.

The previous prime is 6830531. The next prime is 6830539. The reversal of 6830538 is 8350386.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 6830499 and 6830508.

It is not an unprimeable number, because it can be changed into a prime (6830531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16093 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

Almost surely, 26830538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6830538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8467200).

6830538 is an abundant number, since it is smaller than the sum of its proper divisors (10103862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6830538 is a wasteful number, since it uses less digits than its factorization.

6830538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 6830538 is about 2613.5297970369. The cubic root of 6830538 is about 189.7368286288.

The spelling of 6830538 in words is "six million, eight hundred thirty thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 11 13 19 22 26 33 38 39 57 66 78 114 143 209 247 286 418 419 429 494 627 741 838 858 1254 1257 1482 2514 2717 4609 5434 5447 7961 8151 9218 10894 13827 15922 16302 16341 23883 27654 32682 47766 59917 87571 103493 119834 175142 179751 206986 262713 310479 359502 525426 620958 1138423 2276846 3415269 6830538