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12860769 = 34286923
BaseRepresentation
bin110001000011…
…110101100001
3220012101122210
4301003311201
511243021034
61135352333
7214212645
oct61036541
926171583
1012860769
117294539
1243826a9
132883a2c
1419cac25
1511e08e9
hexc43d61

12860769 has 4 divisors (see below), whose sum is σ = 17147696. Its totient is φ = 8573844.

The previous prime is 12860759. The next prime is 12860791. The reversal of 12860769 is 96706821.

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.

It is not a de Polignac number, because 12860769 - 215 = 12828001 is a prime.

It is a super-2 number, since 2×128607692 = 330798758542722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12860759) 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, 2143459 + ... + 2143464.

It is an arithmetic number, because the mean of its divisors is an integer number (4286924).

Almost surely, 212860769 is an apocalyptic number.

It is an amenable number.

12860769 is a deficient number, since it is larger than the sum of its proper divisors (4286927).

12860769 is an equidigital number, since it uses as much as digits as its factorization.

12860769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286926.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 12860769 is about 3586.1914338194. The cubic root of 12860769 is about 234.2910215045.

The spelling of 12860769 in words is "twelve million, eight hundred sixty thousand, seven hundred sixty-nine".

Divisors: 1 3 4286923 12860769