216384873 has 8 divisors (see below), whose sum is σ = 293243136. Its totient is φ = 141891600.

The previous prime is 216384869. The next prime is 216384877. The reversal of 216384873 is 378483612.

It is an interprime number because it is at equal distance from previous prime (216384869) and next prime (216384877).

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

It is not a de Polignac number, because 216384873 - 2² = 216384869 is a prime.

It is a super-2 number, since 2×216384873² = 93644826526452258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216384877) 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, 591033 + ... + 591398.

It is an arithmetic number, because the mean of its divisors is an integer number (36655392).

Almost surely, 2^216384873 is an apocalyptic number.

It is an amenable number.

216384873 is a deficient number, since it is larger than the sum of its proper divisors (76858263).

216384873 is a wasteful number, since it uses less digits than its factorization.

216384873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182495.

The product of its digits is 193536, while the sum is 42.

The square root of 216384873 is about 14710.0262746196. The cubic root of 216384873 is about 600.3561524395.

The spelling of 216384873 in words is "two hundred sixteen million, three hundred eighty-four thousand, eight hundred seventy-three".