216328955 has 8 divisors (see below), whose sum is σ = 260760192. Its totient is φ = 172286208.

The previous prime is 216328933. The next prime is 216328999. The reversal of 216328955 is 559823612.

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

It is a cyclic number.

It is not a de Polignac number, because 216328955 - 2¹⁶ = 216263419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95894 + ... + 98123.

It is an arithmetic number, because the mean of its divisors is an integer number (32595024).

Almost surely, 2^216328955 is an apocalyptic number.

216328955 is a deficient number, since it is larger than the sum of its proper divisors (44431237).

216328955 is a wasteful number, since it uses less digits than its factorization.

216328955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194245.

The product of its digits is 129600, while the sum is 41.

The square root of 216328955 is about 14708.1254753962. The cubic root of 216328955 is about 600.3044334706.

The spelling of 216328955 in words is "two hundred sixteen million, three hundred twenty-eight thousand, nine hundred fifty-five".