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13495237 = 72299497
BaseRepresentation
bin110011011110…
…101111000101
3221101121222121
4303132233011
511423321422
61201125541
7222464500
oct63365705
927347877
1013495237
117688198
1246298b1
132a46762
141b14137
1512b88c7
hexcdebc5

13495237 has 12 divisors (see below), whose sum is σ = 16241580. Its totient is φ = 11167296.

The previous prime is 13495193. The next prime is 13495241. The reversal of 13495237 is 73259431.

It can be written as a sum of positive squares in 2 ways, for example, as 3261636 + 10233601 = 1806^2 + 3199^2 .

It is a de Polignac number, because none of the positive numbers 2k-13495237 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 (13495267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3328 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (1353465).

Almost surely, 213495237 is an apocalyptic number.

It is an amenable number.

13495237 is a deficient number, since it is larger than the sum of its proper divisors (2746343).

13495237 is an equidigital number, since it uses as much as digits as its factorization.

13495237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540 (or 9533 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 13495237 is about 3673.5863947919. The cubic root of 13495237 is about 238.0821515709.

The spelling of 13495237 in words is "thirteen million, four hundred ninety-five thousand, two hundred thirty-seven".

Divisors: 1 7 29 49 203 1421 9497 66479 275413 465353 1927891 13495237