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13670253 = 321979943
BaseRepresentation
bin110100001001…
…011101101101
3221201112001200
4310021131231
511444422003
61205000113
7224123652
oct64113555
927645050
1013670253
117797733
1246b3039
132aa830c
141b5bc29
1513006a3
hexd0976d

13670253 has 12 divisors (see below), whose sum is σ = 20785440. Its totient is φ = 8633736.

The previous prime is 13670221. The next prime is 13670297. The reversal of 13670253 is 35207631.

It is a happy number.

13670253 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13670253 - 25 = 13670221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670953) 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 11 ways as a sum of consecutive naturals, for example, 39801 + ... + 40142.

It is an arithmetic number, because the mean of its divisors is an integer number (1732120).

Almost surely, 213670253 is an apocalyptic number.

It is an amenable number.

13670253 is a deficient number, since it is larger than the sum of its proper divisors (7115187).

13670253 is a wasteful number, since it uses less digits than its factorization.

13670253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79968 (or 79965 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 13670253 is about 3697.3305234994. The cubic root of 13670253 is about 239.1069413983.

Adding to 13670253 its reverse (35207631), we get a palindrome (48877884).

The spelling of 13670253 in words is "thirteen million, six hundred seventy thousand, two hundred fifty-three".

Divisors: 1 3 9 19 57 171 79943 239829 719487 1518917 4556751 13670253