216932215 has 8 divisors (see below), whose sum is σ = 274019760. Its totient is φ = 164411712.

The previous prime is 216932207. The next prime is 216932231. The reversal of 216932215 is 512239612.

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

It is not a de Polignac number, because 216932215 - 2³ = 216932207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141654 + ... + 1141843.

It is an arithmetic number, because the mean of its divisors is an integer number (34252470).

Almost surely, 2^216932215 is an apocalyptic number.

216932215 is a deficient number, since it is larger than the sum of its proper divisors (57087545).

216932215 is a wasteful number, since it uses less digits than its factorization.

216932215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283521.

The product of its digits is 6480, while the sum is 31.

The square root of 216932215 is about 14728.6189101355. The cubic root of 216932215 is about 600.8619232580.

The spelling of 216932215 in words is "two hundred sixteen million, nine hundred thirty-two thousand, two hundred fifteen".