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12828085 = 53769341
BaseRepresentation
bin110000111011…
…110110110101
3220010201211021
4300323312311
511240444320
61134541141
7214015444
oct60736665
926121737
1012828085
117271a26
1243677b1
132871baa
1419bcd5b
1511d5daa
hexc3bdb5

12828085 has 8 divisors (see below), whose sum is σ = 15809976. Its totient is φ = 9984960.

The previous prime is 12828083. The next prime is 12828091. The reversal of 12828085 is 58082821.

It is a happy number.

12828085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2187441 + 10640644 = 1479^2 + 3262^2 .

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

It is not a de Polignac number, because 12828085 - 21 = 12828083 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 12828085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12828083) 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, 34486 + ... + 34855.

It is an arithmetic number, because the mean of its divisors is an integer number (1976247).

Almost surely, 212828085 is an apocalyptic number.

It is an amenable number.

12828085 is a deficient number, since it is larger than the sum of its proper divisors (2981891).

12828085 is an equidigital number, since it uses as much as digits as its factorization.

12828085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69383.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 12828085 is about 3581.6316114307. The cubic root of 12828085 is about 234.0923795770.

The spelling of 12828085 in words is "twelve million, eight hundred twenty-eight thousand, eighty-five".

Divisors: 1 5 37 185 69341 346705 2565617 12828085