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13238065 = 52991297
BaseRepresentation
bin110010011111…
…111100110001
3220220120012201
4302133330301
511342104230
61151423201
7220343641
oct62377461
926816181
1013238065
117521a55
124524b01
132986699
141a88521
1512675ca
hexc9ff31

13238065 has 8 divisors (see below), whose sum is σ = 16433640. Its totient is φ = 10225152.

The previous prime is 13238051. The next prime is 13238101. The reversal of 13238065 is 56083231.

It can be written as a sum of positive squares in 4 ways, for example, as 1411344 + 11826721 = 1188^2 + 3439^2 .

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 13238065 - 219 = 12713777 is a prime.

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, 45504 + ... + 45793.

It is an arithmetic number, because the mean of its divisors is an integer number (2054205).

Almost surely, 213238065 is an apocalyptic number.

It is an amenable number.

13238065 is a deficient number, since it is larger than the sum of its proper divisors (3195575).

13238065 is an equidigital number, since it uses as much as digits as its factorization.

13238065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91331.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13238065 is about 3638.4151769692. The cubic root of 13238065 is about 236.5601043327.

The spelling of 13238065 in words is "thirteen million, two hundred thirty-eight thousand, sixty-five".

Divisors: 1 5 29 145 91297 456485 2647613 13238065