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13008789 = 33481807
BaseRepresentation
bin110001100111…
…111110010101
3220110220201000
4301213332111
511312240124
61142453513
7215400333
oct61477625
926426630
1013008789
117385772
124434299
132906211
141a28b53
15121e6c9
hexc67f95

13008789 has 8 divisors (see below), whose sum is σ = 19272320. Its totient is φ = 8672508.

The previous prime is 13008781. The next prime is 13008811. The reversal of 13008789 is 98780031.

It is not a de Polignac number, because 13008789 - 23 = 13008781 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 (13008781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240877 + ... + 240930.

It is an arithmetic number, because the mean of its divisors is an integer number (2409040).

Almost surely, 213008789 is an apocalyptic number.

It is an amenable number.

13008789 is a deficient number, since it is larger than the sum of its proper divisors (6263531).

13008789 is an equidigital number, since it uses as much as digits as its factorization.

13008789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481816 (or 481810 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 13008789 is about 3606.7698845366. The cubic root of 13008789 is about 235.1864462723.

The spelling of 13008789 in words is "thirteen million, eight thousand, seven hundred eighty-nine".

Divisors: 1 3 9 27 481807 1445421 4336263 13008789