216484 has 6 divisors (see below), whose sum is σ = 378854. Its totient is φ = 108240.

The previous prime is 216481. The next prime is 216493. The reversal of 216484 is 484612.

216484 = T₃₂₇ + T₃₂₈ + ... + T₃₃₀.

216484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 107584 = 330^2 + 328^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27057 + ... + 27064.

2²¹⁶⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

216484 is a deficient number, since it is larger than the sum of its proper divisors (162370).

216484 is a wasteful number, since it uses less digits than its factorization.

216484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54125 (or 54123 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 216484 is about 465.2784112765. The cubic root of 216484 is about 60.0447813836.

The spelling of 216484 in words is "two hundred sixteen thousand, four hundred eighty-four".