216428595 has 16 divisors (see below), whose sum is σ = 358227360. Its totient is φ = 111448064.

The previous prime is 216428593. The next prime is 216428599. The reversal of 216428595 is 595824612.

216428595 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 216428595 - 2¹ = 216428593 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (216428591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248334 + ... + 249203.

It is an arithmetic number, because the mean of its divisors is an integer number (22389210).

Almost surely, 2^216428595 is an apocalyptic number.

216428595 is a deficient number, since it is larger than the sum of its proper divisors (141798765).

216428595 is a wasteful number, since it uses less digits than its factorization.

216428595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497574.

The product of its digits is 172800, while the sum is 42.

The square root of 216428595 is about 14711.5123287852. The cubic root of 216428595 is about 600.3965850317.

The spelling of 216428595 in words is "two hundred sixteen million, four hundred twenty-eight thousand, five hundred ninety-five".