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13066291 = 72377207
BaseRepresentation
bin110001110110…
…000000110011
3220120211120201
4301312000303
511321110131
61144020031
7216030100
oct61660063
926524521
1013066291
117414997
124461617
132926444
141a41aa7
151231761
hexc76033

13066291 has 12 divisors (see below), whose sum is σ = 15612528. Its totient is φ = 10895472.

The previous prime is 13066279. The next prime is 13066309. The reversal of 13066291 is 19266031.

It is not a de Polignac number, because 13066291 - 29 = 13065779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13066241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1791 + ... + 5416.

It is an arithmetic number, because the mean of its divisors is an integer number (1301044).

Almost surely, 213066291 is an apocalyptic number.

13066291 is a deficient number, since it is larger than the sum of its proper divisors (2546237).

13066291 is an equidigital number, since it uses as much as digits as its factorization.

13066291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258 (or 7251 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13066291 is about 3614.7324935602. The cubic root of 13066291 is about 235.5324639742.

The spelling of 13066291 in words is "thirteen million, sixty-six thousand, two hundred ninety-one".

Divisors: 1 7 37 49 259 1813 7207 50449 266659 353143 1866613 13066291