23044540 has 12 divisors (see below), whose sum is σ = 48393576. Its totient is φ = 9217808.

The previous prime is 23044507. The next prime is 23044547. The reversal of 23044540 is 4544032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23044547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576094 + ... + 576133.

It is an arithmetic number, because the mean of its divisors is an integer number (4032798).

Almost surely, 2^23044540 is an apocalyptic number.

23044540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23044540 is an abundant number, since it is smaller than the sum of its proper divisors (25349036).

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

23044540 is a wasteful number, since it uses less digits than its factorization.

23044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152236 (or 1152234 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 23044540 is about 4800.4728933721. The cubic root of 23044540 is about 284.5701532887.

Adding to 23044540 its reverse (4544032), we get a palindrome (27588572).

The spelling of 23044540 in words is "twenty-three million, forty-four thousand, five hundred forty".