923920 has 20 divisors (see below), whose sum is σ = 2148300. Its totient is φ = 369536.

The previous prime is 923917. The next prime is 923929. The reversal of 923920 is 29329.

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 258064 = 816^2 + 508^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (923929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5695 + ... + 5854.

It is an arithmetic number, because the mean of its divisors is an integer number (107415).

2⁹²³⁹²⁰ is an apocalyptic number.

It is an amenable number.

923920 is an abundant number, since it is smaller than the sum of its proper divisors (1224380).

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

923920 is a wasteful number, since it uses less digits than its factorization.

923920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11562 (or 11556 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 923920 is about 961.2075738362. The cubic root of 923920 is about 97.3968226964.

The spelling of 923920 in words is "nine hundred twenty-three thousand, nine hundred twenty".