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13243015 = 56913833
BaseRepresentation
bin110010100001…
…001010000111
3220220211000001
4302201022013
511342234030
61151502131
7220364242
oct62411207
926824001
1013243015
117525745
124527947
132988a06
141a8a259
151268cca
hexca1287

13243015 has 8 divisors (see below), whose sum is σ = 15918768. Its totient is φ = 10576320.

The previous prime is 13243001. The next prime is 13243031. The reversal of 13243015 is 51034231.

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

It is not a de Polignac number, because 13243015 - 223 = 4854407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13242983 and 13243001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539 + ... + 5371.

It is an arithmetic number, because the mean of its divisors is an integer number (1989846).

Almost surely, 213243015 is an apocalyptic number.

13243015 is a deficient number, since it is larger than the sum of its proper divisors (2675753).

13243015 is an equidigital number, since it uses as much as digits as its factorization.

13243015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13243015 is about 3639.0953546177. The cubic root of 13243015 is about 236.5895856453.

Adding to 13243015 its reverse (51034231), we get a palindrome (64277246).

The spelling of 13243015 in words is "thirteen million, two hundred forty-three thousand, fifteen".

Divisors: 1 5 691 3455 3833 19165 2648603 13243015