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13261093 = 130110193
BaseRepresentation
bin110010100101…
…100100100101
3220221201210121
4302211210211
511343323333
61152121541
7220501036
oct62454445
926851717
1013261093
11753828a
1245362b1
132994001
141a92a8d
15126e32d
hexca5925

13261093 has 4 divisors (see below), whose sum is σ = 13272588. Its totient is φ = 13249600.

The previous prime is 13261063. The next prime is 13261099. The reversal of 13261093 is 39016231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39016231 = 382110211.

It can be written as a sum of positive squares in 2 ways, for example, as 3319684 + 9941409 = 1822^2 + 3153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13261093 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 (13261099) 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 3 ways as a sum of consecutive naturals, for example, 3796 + ... + 6397.

It is an arithmetic number, because the mean of its divisors is an integer number (3318147).

Almost surely, 213261093 is an apocalyptic number.

It is an amenable number.

13261093 is a deficient number, since it is larger than the sum of its proper divisors (11495).

13261093 is a wasteful number, since it uses less digits than its factorization.

13261093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11494.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 13261093 is about 3641.5783665878. The cubic root of 13261093 is about 236.6971926064.

The spelling of 13261093 in words is "thirteen million, two hundred sixty-one thousand, ninety-three".

Divisors: 1 1301 10193 13261093