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13000089 = 34333363
BaseRepresentation
bin110001100101…
…110110011001
3220110110202210
4301211312121
511312000324
61142345333
7215333064
oct61456631
926413683
1013000089
11737a183
12442b249
13290227b
141a258db
15121bd29
hexc65d99

13000089 has 4 divisors (see below), whose sum is σ = 17333456. Its totient is φ = 8666724.

The previous prime is 13000081. The next prime is 13000133. The reversal of 13000089 is 98000031.

13000089 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98000031 = 332666677.

It is not a de Polignac number, because 13000089 - 23 = 13000081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13000081) 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 3 ways as a sum of consecutive naturals, for example, 2166679 + ... + 2166684.

It is an arithmetic number, because the mean of its divisors is an integer number (4333364).

Almost surely, 213000089 is an apocalyptic number.

It is an amenable number.

13000089 is a deficient number, since it is larger than the sum of its proper divisors (4333367).

13000089 is an equidigital number, since it uses as much as digits as its factorization.

13000089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333366.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 13000089 is about 3605.5636175222. The cubic root of 13000089 is about 235.1340053575.

The spelling of 13000089 in words is "thirteen million, eighty-nine", and thus it is an aban number and an uban number.

Divisors: 1 3 4333363 13000089