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12613223 = 723157499
BaseRepresentation
bin110000000111…
…011001100111
3212201211002102
4300013121213
511212110343
61130202315
7212132150
oct60073147
925654072
1012613223
117135557
12428339b
1327c815c
141964927
1511923b8
hexc07667

12613223 has 16 divisors (see below), whose sum is σ = 15168000. Its totient is φ = 10254816.

The previous prime is 12613193. The next prime is 12613229. The reversal of 12613223 is 32231621.

It is a happy number.

12613223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12613223 - 210 = 12612199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12613195 and 12613204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25028 + ... + 25526.

It is an arithmetic number, because the mean of its divisors is an integer number (948000).

Almost surely, 212613223 is an apocalyptic number.

12613223 is a deficient number, since it is larger than the sum of its proper divisors (2554777).

12613223 is a wasteful number, since it uses less digits than its factorization.

12613223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686.

The product of its digits is 432, while the sum is 20.

The square root of 12613223 is about 3551.5099605661. The cubic root of 12613223 is about 232.7780494315.

Adding to 12613223 its reverse (32231621), we get a palindrome (44844844).

The spelling of 12613223 in words is "twelve million, six hundred thirteen thousand, two hundred twenty-three".

Divisors: 1 7 23 157 161 499 1099 3493 3611 11477 25277 78343 80339 548401 1801889 12613223