216288535 has 8 divisors (see below), whose sum is σ = 274813776. Its totient is φ = 162852480.

The previous prime is 216288521. The next prime is 216288539. The reversal of 216288535 is 535882612.

216288535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216288535 - 2¹³ = 216280343 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 (216288539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272201 + ... + 1272370.

It is an arithmetic number, because the mean of its divisors is an integer number (34351722).

Almost surely, 2^216288535 is an apocalyptic number.

216288535 is a deficient number, since it is larger than the sum of its proper divisors (58525241).

216288535 is a wasteful number, since it uses less digits than its factorization.

216288535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544593.

The product of its digits is 115200, while the sum is 40.

The square root of 216288535 is about 14706.7513407958. The cubic root of 216288535 is about 600.2670431660.

The spelling of 216288535 in words is "two hundred sixteen million, two hundred eighty-eight thousand, five hundred thirty-five".