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13048969 = 73178753
BaseRepresentation
bin110001110001…
…110010001001
3220112221211011
4301301302021
511320031334
61143403521
7215625433
oct61616211
926487734
1013048969
11740297a
1244535a1
13291b5ab
141a39653
15122b564
hexc71c89

13048969 has 4 divisors (see below), whose sum is σ = 13227796. Its totient is φ = 12870144.

The previous prime is 13048963. The next prime is 13048999. The reversal of 13048969 is 96984031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 9765625 = 1812^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 13048969 - 23 = 13048961 is a prime.

It is a super-2 number, since 2×130489692 = 340551183925922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13048961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89304 + ... + 89449.

It is an arithmetic number, because the mean of its divisors is an integer number (3306949).

Almost surely, 213048969 is an apocalyptic number.

It is an amenable number.

13048969 is a deficient number, since it is larger than the sum of its proper divisors (178827).

13048969 is an equidigital number, since it uses as much as digits as its factorization.

13048969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178826.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 13048969 is about 3612.3356710029. The cubic root of 13048969 is about 235.4283360424.

The spelling of 13048969 in words is "thirteen million, forty-eight thousand, nine hundred sixty-nine".

Divisors: 1 73 178753 13048969