Search a number
-
+
12160069 = 20895821
BaseRepresentation
bin101110011000…
…110001000101
3211212210110221
4232120301011
511103110234
61112344341
7205234045
oct56306105
924783427
1012160069
116956049
1240a50b1
132699b0c
141887725
151102eb4
hexb98c45

12160069 has 4 divisors (see below), whose sum is σ = 12167980. Its totient is φ = 12152160.

The previous prime is 12160061. The next prime is 12160073. The reversal of 12160069 is 96006121.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 10647169 + 1512900 = 3263^2 + 1230^2 .

It is a cyclic number.

It is not a de Polignac number, because 12160069 - 23 = 12160061 is a prime.

It is a super-2 number, since 2×121600692 = 295734556169522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12160061) 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, 822 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (3041995).

Almost surely, 212160069 is an apocalyptic number.

It is an amenable number.

12160069 is a deficient number, since it is larger than the sum of its proper divisors (7911).

12160069 is an equidigital number, since it uses as much as digits as its factorization.

12160069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7910.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 12160069 is about 3487.1290483720. The cubic root of 12160069 is about 229.9563181064.

The spelling of 12160069 in words is "twelve million, one hundred sixty thousand, sixty-nine".

Divisors: 1 2089 5821 12160069