13216293 has 12 divisors (see below), whose sum is σ = 20213388. Its totient is φ = 8292480.

The previous prime is 13216249. The next prime is 13216303. The reversal of 13216293 is 39261231.

13216293 is a `hidden beast` number, since 1 + 32 + 1 + 629 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 5280804 = 2817^2 + 2298^2 .

It is not a de Polignac number, because 13216293 - 2⁹ = 13215781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13216223) 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, 43038 + ... + 43343.

It is an arithmetic number, because the mean of its divisors is an integer number (1684449).

Almost surely, 2^13216293 is an apocalyptic number.

It is an amenable number.

13216293 is a deficient number, since it is larger than the sum of its proper divisors (6997095).

13216293 is a wasteful number, since it uses less digits than its factorization.

13216293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86404 (or 86401 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 13216293 is about 3635.4219837592. The cubic root of 13216293 is about 236.4303468819.

The spelling of 13216293 in words is "thirteen million, two hundred sixteen thousand, two hundred ninety-three".