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13969265 = 52793853
BaseRepresentation
bin110101010010…
…011101110001
3222021201020012
4311102131301
512034004030
61215224305
7226510502
oct65223561
928251205
1013969265
117981352
124818095
132b8144b
141bd8ba9
15135e095
hexd52771

13969265 has 4 divisors (see below), whose sum is σ = 16763124. Its totient is φ = 11175408.

The previous prime is 13969247. The next prime is 13969289. The reversal of 13969265 is 56296931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56296931 = 61791243.

It can be written as a sum of positive squares in 2 ways, for example, as 4800481 + 9168784 = 2191^2 + 3028^2 .

It is a cyclic number.

It is not a de Polignac number, because 13969265 - 218 = 13707121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1396922 + ... + 1396931.

It is an arithmetic number, because the mean of its divisors is an integer number (4190781).

Almost surely, 213969265 is an apocalyptic number.

It is an amenable number.

13969265 is a deficient number, since it is larger than the sum of its proper divisors (2793859).

13969265 is an equidigital number, since it uses as much as digits as its factorization.

13969265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793858.

The product of its digits is 87480, while the sum is 41.

The square root of 13969265 is about 3737.5479930029. The cubic root of 13969265 is about 240.8377264264.

It can be divided in two parts, 1396926 and 5, that added together give a palindrome (1396931).

The spelling of 13969265 in words is "thirteen million, nine hundred sixty-nine thousand, two hundred sixty-five".

Divisors: 1 5 2793853 13969265