216832887 has 12 divisors (see below), whose sum is σ = 320842704. Its totient is φ = 141029280.

The previous prime is 216832871. The next prime is 216832901. The reversal of 216832887 is 788238612.

It is not a de Polignac number, because 216832887 - 2⁴ = 216832871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216832867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293443 + ... + 294180.

It is an arithmetic number, because the mean of its divisors is an integer number (26736892).

Almost surely, 2^216832887 is an apocalyptic number.

216832887 is a deficient number, since it is larger than the sum of its proper divisors (104009817).

216832887 is a wasteful number, since it uses less digits than its factorization.

216832887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587670 (or 587667 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 216832887 is about 14725.2465853717. The cubic root of 216832887 is about 600.7702025570.

The spelling of 216832887 in words is "two hundred sixteen million, eight hundred thirty-two thousand, eight hundred eighty-seven".