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12760769 = 71822967
BaseRepresentation
bin110000101011…
…011011000001
3220000022111002
4300223123001
511231321034
61133301345
7213315260
oct60533301
926008432
1012760769
11722639a
124334855
13284a368
1419a25d7
1511c0e7e
hexc2b6c1

12760769 has 4 divisors (see below), whose sum is σ = 14583744. Its totient is φ = 10937796.

The previous prime is 12760763. The next prime is 12760777. The reversal of 12760769 is 96706721.

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: 96706721 = 721113411.

It is a cyclic number.

It is not a de Polignac number, because 12760769 - 28 = 12760513 is a prime.

It is a super-2 number, since 2×127607692 = 325674450942722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12760763) 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, 911477 + ... + 911490.

It is an arithmetic number, because the mean of its divisors is an integer number (3645936).

Almost surely, 212760769 is an apocalyptic number.

It is an amenable number.

12760769 is a deficient number, since it is larger than the sum of its proper divisors (1822975).

12760769 is an equidigital number, since it uses as much as digits as its factorization.

12760769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822974.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 12760769 is about 3572.2218576119. The cubic root of 12760769 is about 233.6821908603.

The spelling of 12760769 in words is "twelve million, seven hundred sixty thousand, seven hundred sixty-nine".

Divisors: 1 7 1822967 12760769