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12168469 = 116310463
BaseRepresentation
bin101110011010…
…110100010101
3211220020000001
4232122310111
511103342334
61112451301
7205300405
oct56326425
924806001
1012168469
116961395
1240a9b31
1326a08a1
14188a805
151105714
hexb9ad15

12168469 has 4 divisors (see below), whose sum is σ = 12180096. Its totient is φ = 12156844.

The previous prime is 12168467. The next prime is 12168491. The reversal of 12168469 is 96486121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96486121 = 372607733.

It is a cyclic number.

It is not a de Polignac number, because 12168469 - 21 = 12168467 is a prime.

It is a super-2 number, since 2×121684692 = 296143275607922, 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 (12168467) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4069 + ... + 6394.

It is an arithmetic number, because the mean of its divisors is an integer number (3045024).

Almost surely, 212168469 is an apocalyptic number.

It is an amenable number.

12168469 is a deficient number, since it is larger than the sum of its proper divisors (11627).

12168469 is a wasteful number, since it uses less digits than its factorization.

12168469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11626.

The product of its digits is 20736, while the sum is 37.

The square root of 12168469 is about 3488.3332696289. Note that the first 3 decimals coincide. The cubic root of 12168469 is about 230.0092560862.

The spelling of 12168469 in words is "twelve million, one hundred sixty-eight thousand, four hundred sixty-nine".

Divisors: 1 1163 10463 12168469