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12160385 = 52432077
BaseRepresentation
bin101110011000…
…110110000001
3211212210220122
4232120312001
511103113020
61112350025
7205235006
oct56306601
924783818
1012160385
116956306
1240a5315
132699cc3
1418878ad
151103125
hexb98d81

12160385 has 4 divisors (see below), whose sum is σ = 14592468. Its totient is φ = 9728304.

The previous prime is 12160381. The next prime is 12160403. The reversal of 12160385 is 58306121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58306121 = 293198997.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 3297856 = 2977^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 12160385 - 22 = 12160381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12160381) 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 3 ways as a sum of consecutive naturals, for example, 1216034 + ... + 1216043.

It is an arithmetic number, because the mean of its divisors is an integer number (3648117).

Almost surely, 212160385 is an apocalyptic number.

It is an amenable number.

12160385 is a deficient number, since it is larger than the sum of its proper divisors (2432083).

12160385 is an equidigital number, since it uses as much as digits as its factorization.

12160385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432082.

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

The square root of 12160385 is about 3487.1743575566. The cubic root of 12160385 is about 229.9583100240.

It can be divided in two parts, 121 and 60385, that added together give a palindrome (60506).

The spelling of 12160385 in words is "twelve million, one hundred sixty thousand, three hundred eighty-five".

Divisors: 1 5 2432077 12160385