216932 has 12 divisors (see below), whose sum is σ = 382956. Its totient is φ = 107520.

The previous prime is 216919. The next prime is 216947. The reversal of 216932 is 239612.

It can be written as a sum of positive squares in 2 ways, for example, as 98596 + 118336 = 314^2 + 344^2 .

It is a nialpdrome in base 15.

It is a zygodrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 216898 and 216907.

It is a congruent number.

It is an unprimeable number.

216932 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 3 ways as a sum of consecutive naturals, for example, 632 + ... + 912.

It is an arithmetic number, because the mean of its divisors is an integer number (31913).

2²¹⁶⁹³² is an apocalyptic number.

It is an amenable number.

216932 is a deficient number, since it is larger than the sum of its proper divisors (166024).

216932 is a wasteful number, since it uses less digits than its factorization.

216932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 476 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 216932 is about 465.7595946408. The cubic root of 216932 is about 60.0861724755.

The spelling of 216932 in words is "two hundred sixteen thousand, nine hundred thirty-two".