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12906373 = 16577789
BaseRepresentation
bin110001001110…
…111110000101
3220021201012211
4301032332011
511301000443
61140343421
7214462624
oct61167605
926251184
1012906373
117315827
1243a4b71
13289b70c
1419dd6bb
1511ee19d
hexc4ef85

12906373 has 4 divisors (see below), whose sum is σ = 12915820. Its totient is φ = 12896928.

The previous prime is 12906371. The next prime is 12906379. The reversal of 12906373 is 37360921.

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 5846724 + 7059649 = 2418^2 + 2657^2 .

It is a cyclic number.

It is not a de Polignac number, because 12906373 - 21 = 12906371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238 + ... + 5551.

It is an arithmetic number, because the mean of its divisors is an integer number (3228955).

Almost surely, 212906373 is an apocalyptic number.

It is an amenable number.

12906373 is a deficient number, since it is larger than the sum of its proper divisors (9447).

12906373 is an equidigital number, since it uses as much as digits as its factorization.

12906373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 12906373 is about 3592.5440846286. The cubic root of 12906373 is about 234.5676250637.

The spelling of 12906373 in words is "twelve million, nine hundred six thousand, three hundred seventy-three".

Divisors: 1 1657 7789 12906373