23043920 has 20 divisors (see below), whose sum is σ = 53577300. Its totient is φ = 9217536.

The previous prime is 23043919. The next prime is 23043947. The reversal of 23043920 is 2934032.

It can be written as a sum of positive squares in 2 ways, for example, as 7011904 + 16032016 = 2648^2 + 4004^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143945 + ... + 144104.

It is an arithmetic number, because the mean of its divisors is an integer number (2678865).

Almost surely, 2^23043920 is an apocalyptic number.

23043920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23043920 is an abundant number, since it is smaller than the sum of its proper divisors (30533380).

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

23043920 is a wasteful number, since it uses less digits than its factorization.

23043920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288062 (or 288056 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23043920 is about 4800.4083159665. The cubic root of 23043920 is about 284.5676012007.

Adding to 23043920 its reverse (2934032), we get a palindrome (25977952).

The spelling of 23043920 in words is "twenty-three million, forty-three thousand, nine hundred twenty".