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13108823 = 721321583
BaseRepresentation
bin110010000000…
…011001010111
3220122222220222
4302000121113
511323440243
61144544555
7216265100
oct62003127
926588828
1013108823
117443942
12448215b
13293c900
141a533a7
15123e168
hexc80657

13108823 has 18 divisors (see below), whose sum is σ = 16522704. Its totient is φ = 10365264.

The previous prime is 13108811. The next prime is 13108831. The reversal of 13108823 is 32880131.

It is not a de Polignac number, because 13108823 - 26 = 13108759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13108792 and 13108801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102823) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7490 + ... + 9072.

It is an arithmetic number, because the mean of its divisors is an integer number (917928).

Almost surely, 213108823 is an apocalyptic number.

13108823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13108823 is a deficient number, since it is larger than the sum of its proper divisors (3413881).

13108823 is a wasteful number, since it uses less digits than its factorization.

13108823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 13108823 is about 3620.6108600622. The cubic root of 13108823 is about 235.7877472547.

Adding to 13108823 its reverse (32880131), we get a palindrome (45988954).

It can be divided in two parts, 13108 and 823, that added together give a palindrome (13931).

The spelling of 13108823 in words is "thirteen million, one hundred eight thousand, eight hundred twenty-three".

Divisors: 1 7 13 49 91 169 637 1183 1583 8281 11081 20579 77567 144053 267527 1008371 1872689 13108823