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13214923 = 29455687
BaseRepresentation
bin110010011010…
…010011001011
3220212101110121
4302122103023
511340334143
61151124111
7220216321
oct62322313
926771417
1013214923
117506627
124513637
132978ca7
141a7dd11
1512607ed
hexc9a4cb

13214923 has 4 divisors (see below), whose sum is σ = 13670640. Its totient is φ = 12759208.

The previous prime is 13214921. The next prime is 13214947. The reversal of 13214923 is 32941231.

13214923 is digitally balanced in base 2, 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 13214923 - 21 = 13214921 is a prime.

It is a super-3 number, since 3×132149233 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13214921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227815 + ... + 227872.

It is an arithmetic number, because the mean of its divisors is an integer number (3417660).

Almost surely, 213214923 is an apocalyptic number.

13214923 is a deficient number, since it is larger than the sum of its proper divisors (455717).

13214923 is an equidigital number, since it uses as much as digits as its factorization.

13214923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455716.

The product of its digits is 1296, while the sum is 25.

The square root of 13214923 is about 3635.2335550828. The cubic root of 13214923 is about 236.4221771486.

The spelling of 13214923 in words is "thirteen million, two hundred fourteen thousand, nine hundred twenty-three".

Divisors: 1 29 455687 13214923