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13389123 = 311405731
BaseRepresentation
bin110011000100…
…110101000011
3221012020102110
4303010311003
511411422443
61154550403
7221543226
oct63046503
927166373
1013389123
1176154a0
124598403
132a0a377
141ac75bd
151297233
hexcc4d43

13389123 has 8 divisors (see below), whose sum is σ = 19475136. Its totient is φ = 8114600.

The previous prime is 13389121. The next prime is 13389127. The reversal of 13389123 is 32198331.

13389123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13389123 - 21 = 13389121 is a prime.

It is a super-2 number, since 2×133891232 = 358537229418258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13389121) 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 7 ways as a sum of consecutive naturals, for example, 202833 + ... + 202898.

It is an arithmetic number, because the mean of its divisors is an integer number (2434392).

Almost surely, 213389123 is an apocalyptic number.

13389123 is a deficient number, since it is larger than the sum of its proper divisors (6086013).

13389123 is a wasteful number, since it uses less digits than its factorization.

13389123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405745.

The product of its digits is 3888, while the sum is 30.

The square root of 13389123 is about 3659.1150569502. The cubic root of 13389123 is about 237.4564899057.

The spelling of 13389123 in words is "thirteen million, three hundred eighty-nine thousand, one hundred twenty-three".

Divisors: 1 3 11 33 405731 1217193 4463041 13389123