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12760897 = 17750641
BaseRepresentation
bin110000101011…
…011101000001
3220000022122211
4300223131001
511231322042
61133302121
7213315532
oct60533501
926008584
1012760897
1172264a6
124334941
13284a436
1419a2689
1511c1017
hexc2b741

12760897 has 4 divisors (see below), whose sum is σ = 13511556. Its totient is φ = 12010240.

The previous prime is 12760889. The next prime is 12760903. The reversal of 12760897 is 79806721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79806721 = 174694513.

It can be written as a sum of positive squares in 2 ways, for example, as 5340721 + 7420176 = 2311^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 12760897 - 23 = 12760889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12760817) 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, 375304 + ... + 375337.

It is an arithmetic number, because the mean of its divisors is an integer number (3377889).

Almost surely, 212760897 is an apocalyptic number.

12760897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12760897 is a deficient number, since it is larger than the sum of its proper divisors (750659).

12760897 is an equidigital number, since it uses as much as digits as its factorization.

12760897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750658.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 12760897 is about 3572.2397735874. The cubic root of 12760897 is about 233.6829721931.

It can be divided in two parts, 12760 and 897, that multiplied together give a triangular number (11445720 = T4784).

The spelling of 12760897 in words is "twelve million, seven hundred sixty thousand, eight hundred ninety-seven".

Divisors: 1 17 750641 12760897