216702873 has 12 divisors (see below), whose sum is σ = 316115748. Its totient is φ = 143037600.

The previous prime is 216702869. The next prime is 216702883. The reversal of 216702873 is 378207612.

It can be written as a sum of positive squares in 2 ways, for example, as 114126489 + 102576384 = 10683^2 + 10128^2 .

It is not a de Polignac number, because 216702873 - 2² = 216702869 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216702823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118290 + ... + 120107.

It is an arithmetic number, because the mean of its divisors is an integer number (26342979).

Almost surely, 2^216702873 is an apocalyptic number.

It is an amenable number.

216702873 is a deficient number, since it is larger than the sum of its proper divisors (99412875).

216702873 is a wasteful number, since it uses less digits than its factorization.

216702873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238504 (or 238501 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 216702873 is about 14720.8312604961. The cubic root of 216702873 is about 600.6501036876.

The spelling of 216702873 in words is "two hundred sixteen million, seven hundred two thousand, eight hundred seventy-three".