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12828851 = 71832693
BaseRepresentation
bin110000111100…
…000010110011
3220010202212122
4300330002303
511241010401
61134544455
7214020620
oct60740263
926122778
1012828851
117272562
12436812b
132872349
1419bd347
1511d621b
hexc3c0b3

12828851 has 4 divisors (see below), whose sum is σ = 14661552. Its totient is φ = 10996152.

The previous prime is 12828847. The next prime is 12828853. The reversal of 12828851 is 15882821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15882821 = 137115933.

It is a cyclic number.

It is not a de Polignac number, because 12828851 - 22 = 12828847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12828853) 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 3 ways as a sum of consecutive naturals, for example, 916340 + ... + 916353.

It is an arithmetic number, because the mean of its divisors is an integer number (3665388).

Almost surely, 212828851 is an apocalyptic number.

12828851 is a deficient number, since it is larger than the sum of its proper divisors (1832701).

12828851 is an equidigital number, since it uses as much as digits as its factorization.

12828851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832700.

The product of its digits is 10240, while the sum is 35.

The square root of 12828851 is about 3581.7385443385. The cubic root of 12828851 is about 234.0970389161.

The spelling of 12828851 in words is "twelve million, eight hundred twenty-eight thousand, eight hundred fifty-one".

Divisors: 1 7 1832693 12828851