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13488169 = 52125889
BaseRepresentation
bin110011011101…
…000000101001
3221101021021211
4303131000221
511423110134
61201033121
7222435052
oct63350051
927337254
1013488169
117682952
1246257a1
132a43486
141b11729
1512b6764
hexcdd029

13488169 has 4 divisors (see below), whose sum is σ = 13514580. Its totient is φ = 13461760.

The previous prime is 13488149. The next prime is 13488173. The reversal of 13488169 is 96188431.

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 9078169 + 4410000 = 3013^2 + 2100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13488169 is a prime.

It is a super-2 number, since 2×134881692 = 363861405945122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13488149) 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, 12424 + ... + 13465.

It is an arithmetic number, because the mean of its divisors is an integer number (3378645).

Almost surely, 213488169 is an apocalyptic number.

It is an amenable number.

13488169 is a deficient number, since it is larger than the sum of its proper divisors (26411).

13488169 is an equidigital number, since it uses as much as digits as its factorization.

13488169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26410.

The product of its digits is 41472, while the sum is 40.

The square root of 13488169 is about 3672.6242661073. The cubic root of 13488169 is about 238.0405799035.

The spelling of 13488169 in words is "thirteen million, four hundred eighty-eight thousand, one hundred sixty-nine".

Divisors: 1 521 25889 13488169