135727215 has 32 divisors (see below), whose sum is σ = 234795456. Its totient is φ = 66554880.

The previous prime is 135727187. The next prime is 135727219. The reversal of 135727215 is 512727531.

It is a happy number.

It is not a de Polignac number, because 135727215 - 2¹¹ = 135725167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135727219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53557 + ... + 56033.

It is an arithmetic number, because the mean of its divisors is an integer number (7337358).

Almost surely, 2^135727215 is an apocalyptic number.

135727215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135727215 is a deficient number, since it is larger than the sum of its proper divisors (99068241).

135727215 is a wasteful number, since it uses less digits than its factorization.

135727215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 14700, while the sum is 33.

The square root of 135727215 is about 11650.2023587576. The cubic root of 135727215 is about 513.9122610110.

The spelling of 135727215 in words is "one hundred thirty-five million, seven hundred twenty-seven thousand, two hundred fifteen".