27216135 has 24 divisors (see below), whose sum is σ = 48492240. Its totient is φ = 14482944.

The previous prime is 27216121. The next prime is 27216139. The reversal of 27216135 is 53161272.

It is a happy number.

27216135 is a `hidden beast` number, since 27 + 21 + 613 + 5 = 666.

It is not a de Polignac number, because 27216135 - 2⁵ = 27216103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 27216099 and 27216108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27216139) 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 23 ways as a sum of consecutive naturals, for example, 60391 + ... + 60839.

It is an arithmetic number, because the mean of its divisors is an integer number (2020510).

Almost surely, 2^27216135 is an apocalyptic number.

27216135 is a deficient number, since it is larger than the sum of its proper divisors (21276105).

27216135 is an frugal number, since it uses more digits than its factorization.

27216135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 457 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 27216135 is about 5216.9085673414. The cubic root of 27216135 is about 300.7983734480.

The spelling of 27216135 in words is "twenty-seven million, two hundred sixteen thousand, one hundred thirty-five".