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13009252 = 229733529
BaseRepresentation
bin110001101000…
…000101100100
3220110221100011
4301220011210
511312244002
61142500004
7215401564
oct61500544
926427304
1013009252
117386053
124434604
1329064a9
141a28da4
15121e8d7
hexc68164

13009252 has 12 divisors (see below), whose sum is σ = 23001580. Its totient is φ = 6437376.

The previous prime is 13009223. The next prime is 13009253. The reversal of 13009252 is 25290031.

It can be written as a sum of positive squares in 2 ways, for example, as 6937956 + 6071296 = 2634^2 + 2464^2 .

It is not an unprimeable number, because it can be changed into a prime (13009253) 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, 16377 + ... + 17152.

Almost surely, 213009252 is an apocalyptic number.

It is an amenable number.

13009252 is a deficient number, since it is larger than the sum of its proper divisors (9992328).

13009252 is a wasteful number, since it uses less digits than its factorization.

13009252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33630 (or 33628 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 13009252 is about 3606.8340688199. The cubic root of 13009252 is about 235.1892364380.

Adding to 13009252 its reverse (25290031), we get a palindrome (38299283).

The spelling of 13009252 in words is "thirteen million, nine thousand, two hundred fifty-two".

Divisors: 1 2 4 97 194 388 33529 67058 134116 3252313 6504626 13009252