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13028443 = 177989109
BaseRepresentation
bin110001101100…
…110001011011
3220111220122221
4301230301123
511313402233
61143124511
7215511541
oct61546133
926456587
1013028443
11739950a
124443737
13291214c
141a31d91
15122542d
hexc6cc5b

13028443 has 16 divisors (see below), whose sum is σ = 14256000. Its totient is φ = 11860992.

The previous prime is 13028437. The next prime is 13028459. The reversal of 13028443 is 34482031.

It is a cyclic number.

It is not a de Polignac number, because 13028443 - 213 = 13020251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13028413) 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, 119473 + ... + 119581.

It is an arithmetic number, because the mean of its divisors is an integer number (891000).

Almost surely, 213028443 is an apocalyptic number.

13028443 is a deficient number, since it is larger than the sum of its proper divisors (1227557).

13028443 is a wasteful number, since it uses less digits than its factorization.

13028443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 13028443 is about 3609.4934547662. The cubic root of 13028443 is about 235.3048285063.

The spelling of 13028443 in words is "thirteen million, twenty-eight thousand, four hundred forty-three".

Divisors: 1 17 79 89 109 1343 1513 1853 7031 8611 9701 119527 146387 164917 766379 13028443