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13105252 = 2237731213
BaseRepresentation
bin110001111111…
…100001100100
3220122211000201
4301333201210
511323332002
61144520244
7216251506
oct61774144
926584021
1013105252
117441196
124480084
13293b0b4
141a51d76
15123d087
hexc7f864

13105252 has 24 divisors (see below), whose sum is σ = 23896376. Its totient is φ = 6283008.

The previous prime is 13105247. The next prime is 13105259. The reversal of 13105252 is 25250131.

It can be written as a sum of positive squares in 4 ways, for example, as 1653796 + 11451456 = 1286^2 + 3384^2 .

It is not an unprimeable number, because it can be changed into a prime (13105259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10198 + ... + 11410.

Almost surely, 213105252 is an apocalyptic number.

It is an amenable number.

13105252 is a deficient number, since it is larger than the sum of its proper divisors (10791124).

13105252 is a wasteful number, since it uses less digits than its factorization.

13105252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 13105252 is about 3620.1176776453. The cubic root of 13105252 is about 235.7663348438.

Adding to 13105252 its reverse (25250131), we get a palindrome (38355383).

The spelling of 13105252 in words is "thirteen million, one hundred five thousand, two hundred fifty-two".

Divisors: 1 2 4 37 73 74 146 148 292 1213 2426 2701 4852 5402 10804 44881 88549 89762 177098 179524 354196 3276313 6552626 13105252