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13085912 = 237534409
BaseRepresentation
bin110001111010…
…110011011000
3220121211111102
4301322303120
511322222122
61144250532
7216141230
oct61726330
926554442
1013085912
117428704
124470a48
132932358
141a48cc0
151237492
hexc7acd8

13085912 has 32 divisors (see below), whose sum is σ = 28576800. Its totient is φ = 5501184.

The previous prime is 13085899. The next prime is 13085921. The reversal of 13085912 is 21958031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764 + ... + 5172.

It is an arithmetic number, because the mean of its divisors is an integer number (893025).

Almost surely, 213085912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13085912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14288400).

13085912 is an abundant number, since it is smaller than the sum of its proper divisors (15490888).

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

13085912 is a wasteful number, since it uses less digits than its factorization.

13085912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475 (or 4471 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 13085912 is about 3617.4455075371. The cubic root of 13085912 is about 235.6503008102.

The spelling of 13085912 in words is "thirteen million, eighty-five thousand, nine hundred twelve".

Divisors: 1 2 4 7 8 14 28 53 56 106 212 371 424 742 1484 2968 4409 8818 17636 30863 35272 61726 123452 233677 246904 467354 934708 1635739 1869416 3271478 6542956 13085912