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13089223 = 73311231
BaseRepresentation
bin110001111011…
…100111000111
3220122000001001
4301323213013
511322323343
61144314131
7216154000
oct61734707
926560031
1013089223
117430144
124472947
132933a04
141a4a1a7
15123844d
hexc7b9c7

13089223 has 16 divisors (see below), whose sum is σ = 15769600. Its totient is φ = 10848600.

The previous prime is 13089221. The next prime is 13089229. The reversal of 13089223 is 32298031.

It is not a de Polignac number, because 13089223 - 21 = 13089221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13089191 and 13089200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13089221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10018 + ... + 11248.

It is an arithmetic number, because the mean of its divisors is an integer number (985600).

Almost surely, 213089223 is an apocalyptic number.

13089223 is a deficient number, since it is larger than the sum of its proper divisors (2680377).

13089223 is an equidigital number, since it uses as much as digits as its factorization.

13089223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13089223 is about 3617.9031219755. The cubic root of 13089223 is about 235.6701738959.

The spelling of 13089223 in words is "thirteen million, eighty-nine thousand, two hundred twenty-three".

Divisors: 1 7 31 49 217 343 1231 1519 8617 10633 38161 60319 267127 422233 1869889 13089223