13538217 has 32 divisors (see below), whose sum is σ = 22763520. Its totient is φ = 6952320.

The previous prime is 13538197. The next prime is 13538233. The reversal of 13538217 is 71283531.

It is not a de Polignac number, because 13538217 - 2⁶ = 13538153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13538297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23509 + ... + 24077.

It is an arithmetic number, because the mean of its divisors is an integer number (711360).

Almost surely, 2^13538217 is an apocalyptic number.

It is an amenable number.

13538217 is a deficient number, since it is larger than the sum of its proper divisors (9225303).

13538217 is a wasteful number, since it uses less digits than its factorization.

13538217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its digits is 5040, while the sum is 30.

The square root of 13538217 is about 3679.4316137143. The cubic root of 13538217 is about 238.3346339060.

The spelling of 13538217 in words is "thirteen million, five hundred thirty-eight thousand, two hundred seventeen".