923540 has 24 divisors (see below), whose sum is σ = 1973832. Its totient is φ = 362880.

The previous prime is 923539. The next prime is 923543. The reversal of 923540 is 45329.

923540 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 4 ways, for example, as 5776 + 917764 = 76^2 + 958^2 .

It is a super-2 number, since 2×923540² = 1705852263200, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 923540.

It is not an unprimeable number, because it can be changed into a prime (923543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842 + ... + 1598.

It is an arithmetic number, because the mean of its divisors is an integer number (82243).

2⁹²³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

923540 is an abundant number, since it is smaller than the sum of its proper divisors (1050292).

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

923540 is a wasteful number, since it uses less digits than its factorization.

923540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 923540 is about 961.0098854851. The cubic root of 923540 is about 97.3834680525.

Adding to 923540 its reverse (45329), we get a palindrome (968869).

The spelling of 923540 in words is "nine hundred twenty-three thousand, five hundred forty".