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12623047 = 20116277
BaseRepresentation
bin110000001001…
…110011000111
3212202022120021
4300021303013
511212414142
61130320011
7212202613
oct60116307
925668507
1012623047
117141978
124289007
1327cc778
141968343
151195267
hexc09cc7

12623047 has 4 divisors (see below), whose sum is σ = 12631336. Its totient is φ = 12614760.

The previous prime is 12623003. The next prime is 12623053. The reversal of 12623047 is 74032621.

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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12623047 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 (12623077) 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, 1128 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (3157834).

Almost surely, 212623047 is an apocalyptic number.

12623047 is a deficient number, since it is larger than the sum of its proper divisors (8289).

12623047 is an equidigital number, since it uses as much as digits as its factorization.

12623047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 12623047 is about 3552.8927650578. The cubic root of 12623047 is about 232.8384679861.

Adding to 12623047 its reverse (74032621), we get a palindrome (86655668).

The spelling of 12623047 in words is "twelve million, six hundred twenty-three thousand, forty-seven".

Divisors: 1 2011 6277 12623047