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12106385 = 52421277
BaseRepresentation
bin101110001011…
…101010010001
3211210001211122
4232023222101
511044401020
61111252025
7204621404
oct56135221
924701748
1012106385
116919785
12407a015
13267b555
141871d3b
1510e2125
hexb8ba91

12106385 has 4 divisors (see below), whose sum is σ = 14527668. Its totient is φ = 9685104.

The previous prime is 12106373. The next prime is 12106411. The reversal of 12106385 is 58360121.

12106385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58360121 = 271215351.

It can be written as a sum of positive squares in 2 ways, for example, as 7879249 + 4227136 = 2807^2 + 2056^2 .

It is a cyclic number.

It is not a de Polignac number, because 12106385 - 210 = 12105361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210634 + ... + 1210643.

It is an arithmetic number, because the mean of its divisors is an integer number (3631917).

Almost surely, 212106385 is an apocalyptic number.

It is an amenable number.

12106385 is a deficient number, since it is larger than the sum of its proper divisors (2421283).

12106385 is an equidigital number, since it uses as much as digits as its factorization.

12106385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421282.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12106385 is about 3479.4230843633. The cubic root of 12106385 is about 229.6174168923.

The spelling of 12106385 in words is "twelve million, one hundred six thousand, three hundred eighty-five".

Divisors: 1 5 2421277 12106385