216460 has 24 divisors (see below), whose sum is σ = 463680. Its totient is φ = 84864.

The previous prime is 216451. The next prime is 216481. The reversal of 216460 is 64612.

216460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

216460 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1512 + ... + 1648.

It is an arithmetic number, because the mean of its divisors is an integer number (19320).

2²¹⁶⁴⁶⁰ is an apocalyptic number.

216460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216460 is an abundant number, since it is smaller than the sum of its proper divisors (247220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216460 is a wasteful number, since it uses less digits than its factorization.

216460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 216460 is about 465.2526195520. The cubic root of 216460 is about 60.0425623928.

It can be divided in two parts, 216 and 460, that added together give a palindrome (676).

The spelling of 216460 in words is "two hundred sixteen thousand, four hundred sixty".