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13036891 = 72266059
BaseRepresentation
bin110001101110…
…110101011011
3220112100020211
4301232311123
511314140031
61143231551
7215545300
oct61566533
926470224
1013036891
1173a489a
1244485b7
132915c4a
141a350a7
151227bb1
hexc6ed5b

13036891 has 6 divisors (see below), whose sum is σ = 15165420. Its totient is φ = 11174436.

The previous prime is 13036873. The next prime is 13036901. The reversal of 13036891 is 19863031.

13036891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13036891 - 29 = 13036379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13036801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132981 + ... + 133078.

It is an arithmetic number, because the mean of its divisors is an integer number (2527570).

Almost surely, 213036891 is an apocalyptic number.

13036891 is a deficient number, since it is larger than the sum of its proper divisors (2128529).

13036891 is an equidigital number, since it uses as much as digits as its factorization.

13036891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266073 (or 266066 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13036891 is about 3610.6635124309. The cubic root of 13036891 is about 235.3556768869.

The spelling of 13036891 in words is "thirteen million, thirty-six thousand, eight hundred ninety-one".

Divisors: 1 7 49 266059 1862413 13036891