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12910673 = 22215813
BaseRepresentation
bin110001010000…
…000001010001
3220021221010002
4301100001101
511301120143
61140415345
7214511306
oct61200121
926257102
1012910673
117318a86
1243a7555
1328a0669
141a010ad
1512005b8
hexc50051

12910673 has 4 divisors (see below), whose sum is σ = 12918708. Its totient is φ = 12902640.

The previous prime is 12910661. The next prime is 12910679. The reversal of 12910673 is 37601921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 4048144 = 2977^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 12910673 - 24 = 12910657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12910679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (3229677).

Almost surely, 212910673 is an apocalyptic number.

It is an amenable number.

12910673 is a deficient number, since it is larger than the sum of its proper divisors (8035).

12910673 is an equidigital number, since it uses as much as digits as its factorization.

12910673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8034.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 12910673 is about 3593.1424964785. The cubic root of 12910673 is about 234.5936723711.

The spelling of 12910673 in words is "twelve million, nine hundred ten thousand, six hundred seventy-three".

Divisors: 1 2221 5813 12910673