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12834861 = 3131917321
BaseRepresentation
bin110000111101…
…100000101101
3220011002010020
4300331200231
511241203421
61135032353
7214044264
oct60754055
926132106
1012834861
117277026
12436b6b9
132874cc0
1419c15db
1511d7dc6
hexc3d82d

12834861 has 16 divisors (see below), whose sum is σ = 19400640. Its totient is φ = 7482240.

The previous prime is 12834853. The next prime is 12834863. The reversal of 12834861 is 16843821.

12834861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12834861 - 23 = 12834853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12834863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7920 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (1212540).

Almost surely, 212834861 is an apocalyptic number.

It is an amenable number.

12834861 is a deficient number, since it is larger than the sum of its proper divisors (6565779).

12834861 is a wasteful number, since it uses less digits than its factorization.

12834861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17356.

The product of its digits is 9216, while the sum is 33.

The square root of 12834861 is about 3582.5774241459. The cubic root of 12834861 is about 234.1335894369.

It can be divided in two parts, 12834 and 861, that added together give a triangular number (13695 = T165).

The spelling of 12834861 in words is "twelve million, eight hundred thirty-four thousand, eight hundred sixty-one".

Divisors: 1 3 13 19 39 57 247 741 17321 51963 225173 329099 675519 987297 4278287 12834861