320916 has 24 divisors (see below), whose sum is σ = 766080. Its totient is φ = 104512.

The previous prime is 320911. The next prime is 320923. The reversal of 320916 is 619023.

320916 is nontrivially palindromic in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 320892 and 320901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320911) by changing a digit.

320916 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, 280 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (31920).

2³²⁰⁹¹⁶ is an apocalyptic number.

It is an amenable number.

320916 is an abundant number, since it is smaller than the sum of its proper divisors (445164).

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

320916 is a wasteful number, since it uses less digits than its factorization.

320916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 320916 is about 566.4944836448. The cubic root of 320916 is about 68.4642397751.

Adding to 320916 its reverse (619023), we get a palindrome (939939).

The spelling of 320916 in words is "three hundred twenty thousand, nine hundred sixteen".