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12760961 = 60721023
BaseRepresentation
bin110000101011…
…011110000001
3220000022202012
4300223132001
511231322321
61133302305
7213315653
oct60533601
926008665
1012760961
117226554
124334995
13284a485
1419a26d3
1511c105b
hexc2b781

12760961 has 4 divisors (see below), whose sum is σ = 12782592. Its totient is φ = 12739332.

The previous prime is 12760939. The next prime is 12760973. The reversal of 12760961 is 16906721.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12760961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12760921) 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, 9905 + ... + 11118.

It is an arithmetic number, because the mean of its divisors is an integer number (3195648).

Almost surely, 212760961 is an apocalyptic number.

It is an amenable number.

12760961 is a deficient number, since it is larger than the sum of its proper divisors (21631).

12760961 is an equidigital number, since it uses as much as digits as its factorization.

12760961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21630.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 12760961 is about 3572.2487315415. The cubic root of 12760961 is about 233.6833628575.

Subtracting 12760961 from its reverse (16906721), we obtain a triangular number (4145760 = T2879).

The spelling of 12760961 in words is "twelve million, seven hundred sixty thousand, nine hundred sixty-one".

Divisors: 1 607 21023 12760961