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13201405 = 57377183
BaseRepresentation
bin110010010110…
…111111111101
3220211200220221
4302112333331
511334421110
61150541341
7220132030
oct62267775
926750827
1013201405
1174a7458
124507851
132972aa9
141a79017
15125b7da
hexc96ffd

13201405 has 8 divisors (see below), whose sum is σ = 18104832. Its totient is φ = 9052368.

The previous prime is 13201403. The next prime is 13201411. The reversal of 13201405 is 50410231.

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 13201405 - 21 = 13201403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188557 + ... + 188626.

It is an arithmetic number, because the mean of its divisors is an integer number (2263104).

Almost surely, 213201405 is an apocalyptic number.

It is an amenable number.

13201405 is a deficient number, since it is larger than the sum of its proper divisors (4903427).

13201405 is an equidigital number, since it uses as much as digits as its factorization.

13201405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377195.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13201405 is about 3633.3737765333. The cubic root of 13201405 is about 236.3415348484.

Adding to 13201405 its reverse (50410231), we get a palindrome (63611636).

The spelling of 13201405 in words is "thirteen million, two hundred one thousand, four hundred five".

Divisors: 1 5 7 35 377183 1885915 2640281 13201405