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13144229 = 72338059
BaseRepresentation
bin110010001001…
…000010100101
3220201210111022
4302021002211
511331103404
61145420525
7216503240
oct62110245
926653438
1013144229
1174684aa
12449a745
132952a67
141a62257
1512498be
hexc890a5

13144229 has 8 divisors (see below), whose sum is σ = 15088320. Its totient is φ = 11216736.

The previous prime is 13144211. The next prime is 13144249. The reversal of 13144229 is 92244131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13144229 - 216 = 13078693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13144198 and 13144207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399 + ... + 5660.

It is an arithmetic number, because the mean of its divisors is an integer number (1886040).

Almost surely, 213144229 is an apocalyptic number.

It is an amenable number.

13144229 is a deficient number, since it is larger than the sum of its proper divisors (1944091).

13144229 is an equidigital number, since it uses as much as digits as its factorization.

13144229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8299.

The product of its digits is 1728, while the sum is 26.

The square root of 13144229 is about 3625.4970693686. The cubic root of 13144229 is about 235.9998384084. Note that the first 3 decimals are identical.

The spelling of 13144229 in words is "thirteen million, one hundred forty-four thousand, two hundred twenty-nine".

Divisors: 1 7 233 1631 8059 56413 1877747 13144229