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13231168 = 261712161
BaseRepresentation
bin110010011110…
…010001000000
3220220012202021
4302132101000
511341344133
61151331224
7220314556
oct62362100
926805667
1013231168
117517855
124520b14
1329834c2
141a85bd6
15126552d
hexc9e440

13231168 has 28 divisors (see below), whose sum is σ = 27802332. Its totient is φ = 6225920.

The previous prime is 13231159. The next prime is 13231171. The reversal of 13231168 is 86113231.

It can be written as a sum of positive squares in 2 ways, for example, as 6718464 + 6512704 = 2592^2 + 2552^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4993 + ... + 7168.

Almost surely, 213231168 is an apocalyptic number.

It is an amenable number.

13231168 is an abundant number, since it is smaller than the sum of its proper divisors (14571164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13231168 is a wasteful number, since it uses less digits than its factorization.

13231168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12190 (or 12180 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 13231168 is about 3637.4672507117. The cubic root of 13231168 is about 236.5190147811.

Adding to 13231168 its reverse (86113231), we get a palindrome (99344399).

The spelling of 13231168 in words is "thirteen million, two hundred thirty-one thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 16 17 32 34 64 68 136 272 544 1088 12161 24322 48644 97288 194576 206737 389152 413474 778304 826948 1653896 3307792 6615584 13231168