216872283 has 16 divisors (see below), whose sum is σ = 292118400. Its totient is φ = 143112000.

The previous prime is 216872261. The next prime is 216872291. The reversal of 216872283 is 382278612.

It is not a de Polignac number, because 216872283 - 2⁶ = 216872219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216872983) 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 15 ways as a sum of consecutive naturals, for example, 133983 + ... + 135591.

It is an arithmetic number, because the mean of its divisors is an integer number (18257400).

Almost surely, 2^216872283 is an apocalyptic number.

216872283 is a deficient number, since it is larger than the sum of its proper divisors (75246117).

216872283 is a wasteful number, since it uses less digits than its factorization.

216872283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042.

The product of its digits is 64512, while the sum is 39.

The square root of 216872283 is about 14726.5842271723. The cubic root of 216872283 is about 600.8065846605.

The spelling of 216872283 in words is "two hundred sixteen million, eight hundred seventy-two thousand, two hundred eighty-three".