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12128853 = 311367541
BaseRepresentation
bin101110010001…
…001001010101
3211211012122210
4232101021111
511101110403
61111544033
7205044042
oct56211125
924735583
1012128853
116934650
12408b019
132688849
14187a1c9
1510e8b03
hexb91255

12128853 has 8 divisors (see below), whose sum is σ = 17642016. Its totient is φ = 7350800.

The previous prime is 12128827. The next prime is 12128869. The reversal of 12128853 is 35882121.

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 12128853 - 214 = 12112469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12128853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126853) 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 7 ways as a sum of consecutive naturals, for example, 183738 + ... + 183803.

It is an arithmetic number, because the mean of its divisors is an integer number (2205252).

Almost surely, 212128853 is an apocalyptic number.

It is an amenable number.

12128853 is a deficient number, since it is larger than the sum of its proper divisors (5513163).

12128853 is a wasteful number, since it uses less digits than its factorization.

12128853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367555.

The product of its digits is 3840, while the sum is 30.

The square root of 12128853 is about 3482.6502839074. The cubic root of 12128853 is about 229.7593765796.

The spelling of 12128853 in words is "twelve million, one hundred twenty-eight thousand, eight hundred fifty-three".

Divisors: 1 3 11 33 367541 1102623 4042951 12128853