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13145835 = 351376397
BaseRepresentation
bin110010001001…
…011011101011
3220201212200210
4302021123223
511331131320
61145432203
7216511023
oct62113353
926655623
1013145835
11746972a
12449b663
132953701
141a62a83
15124a0e0
hexc896eb

13145835 has 16 divisors (see below), whose sum is σ = 21190176. Its totient is φ = 6958848.

The previous prime is 13145833. The next prime is 13145843. The reversal of 13145835 is 53854131.

It is not a de Polignac number, because 13145835 - 21 = 13145833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13145833) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1144 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (1324386).

Almost surely, 213145835 is an apocalyptic number.

13145835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13145835 is a deficient number, since it is larger than the sum of its proper divisors (8044341).

13145835 is a wasteful number, since it uses less digits than its factorization.

13145835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542.

The product of its digits is 7200, while the sum is 30.

The square root of 13145835 is about 3625.7185494740. The cubic root of 13145835 is about 236.0094497317.

Adding to 13145835 its reverse (53854131), we get a palindrome (66999966).

The spelling of 13145835 in words is "thirteen million, one hundred forty-five thousand, eight hundred thirty-five".

Divisors: 1 3 5 15 137 411 685 2055 6397 19191 31985 95955 876389 2629167 4381945 13145835