23145044 has 12 divisors (see below), whose sum is σ = 43619604. Its totient is φ = 10682304.

The previous prime is 23145019. The next prime is 23145053. The reversal of 23145044 is 44054132.

It can be written as a sum of positive squares in 2 ways, for example, as 12517444 + 10627600 = 3538^2 + 3260^2 .

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, 222497 + ... + 222600.

It is an arithmetic number, because the mean of its divisors is an integer number (3634967).

Almost surely, 2^23145044 is an apocalyptic number.

It is an amenable number.

23145044 is a deficient number, since it is larger than the sum of its proper divisors (20474560).

23145044 is a wasteful number, since it uses less digits than its factorization.

23145044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445114 (or 445112 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 23145044 is about 4810.9296398929. The cubic root of 23145044 is about 284.9832512985.

Adding to 23145044 its reverse (44054132), we get a palindrome (67199176).

The spelling of 23145044 in words is "twenty-three million, one hundred forty-five thousand, forty-four".