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13028235 = 3511233433
BaseRepresentation
bin110001101100…
…101110001011
3220111220101020
4301230232023
511313400420
61143123523
7215511123
oct61545613
926456336
1013028235
117399340
1244435a3
13291201c
141a31c83
151225340
hexc6cb8b

13028235 has 32 divisors (see below), whose sum is σ = 23735808. Its totient is φ = 6040320.

The previous prime is 13028233. The next prime is 13028251. The reversal of 13028235 is 53282031.

13028235 = T186 + T187 + ... + T438.

13028235 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13028235 - 21 = 13028233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13028233) 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 31 ways as a sum of consecutive naturals, for example, 2079 + ... + 5511.

It is an arithmetic number, because the mean of its divisors is an integer number (741744).

Almost surely, 213028235 is an apocalyptic number.

13028235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13028235 is a deficient number, since it is larger than the sum of its proper divisors (10707573).

13028235 is a wasteful number, since it uses less digits than its factorization.

13028235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 13028235 is about 3609.4646417440. The cubic root of 13028235 is about 235.3035762803.

The spelling of 13028235 in words is "thirteen million, twenty-eight thousand, two hundred thirty-five".

Divisors: 1 3 5 11 15 23 33 55 69 115 165 253 345 759 1265 3433 3795 10299 17165 37763 51495 78959 113289 188815 236877 394795 566445 868549 1184385 2605647 4342745 13028235