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12992623 = 71856089
BaseRepresentation
bin110001100100…
…000001101111
3220110002112021
4301210001233
511311230443
61142251011
7215302240
oct61440157
926402467
1012992623
117374606
124426a67
1328cba57
141a22cc7
1512199ed
hexc6406f

12992623 has 4 divisors (see below), whose sum is σ = 14848720. Its totient is φ = 11136528.

The previous prime is 12992621. The next prime is 12992653. The reversal of 12992623 is 32629921.

12992623 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12992623 - 21 = 12992621 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 (12992621) 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, 928038 + ... + 928051.

It is an arithmetic number, because the mean of its divisors is an integer number (3712180).

Almost surely, 212992623 is an apocalyptic number.

12992623 is a deficient number, since it is larger than the sum of its proper divisors (1856097).

12992623 is an equidigital number, since it uses as much as digits as its factorization.

12992623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856096.

The product of its digits is 11664, while the sum is 34.

The square root of 12992623 is about 3604.5281244568. The cubic root of 12992623 is about 235.0889839566.

The spelling of 12992623 in words is "twelve million, nine hundred ninety-two thousand, six hundred twenty-three".

Divisors: 1 7 1856089 12992623