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12382871 = 29994129
BaseRepresentation
bin101111001111…
…001010010111
3212022010002212
4233033022113
511132222441
61121224035
7210152444
oct57171227
925263085
1012382871
116a98486
12419201b
132747357
1419049cb
151148eeb
hexbcf297

12382871 has 4 divisors (see below), whose sum is σ = 12390000. Its totient is φ = 12375744.

The previous prime is 12382859. The next prime is 12382891. The reversal of 12382871 is 17828321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 17828321 = 72546903.

It is a cyclic number.

It is not a de Polignac number, because 12382871 - 26 = 12382807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12382841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (3097500).

Almost surely, 212382871 is an apocalyptic number.

12382871 is a deficient number, since it is larger than the sum of its proper divisors (7129).

12382871 is an equidigital number, since it uses as much as digits as its factorization.

12382871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128.

The product of its digits is 5376, while the sum is 32.

The square root of 12382871 is about 3518.9303772595. The cubic root of 12382871 is about 231.3522794701.

The spelling of 12382871 in words is "twelve million, three hundred eighty-two thousand, eight hundred seventy-one".

Divisors: 1 2999 4129 12382871