23309144 has 16 divisors (see below), whose sum is σ = 43810800. Its totient is φ = 11626272.

The previous prime is 23309141. The next prime is 23309147. The reversal of 23309144 is 44190332.

It is an interprime number because it is at equal distance from previous prime (23309141) and next prime (23309147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23309141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (2738175).

Almost surely, 2^23309144 is an apocalyptic number.

It is an amenable number.

23309144 is a deficient number, since it is larger than the sum of its proper divisors (20501656).

23309144 is a wasteful number, since it uses less digits than its factorization.

23309144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7082 (or 7078 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23309144 is about 4827.9544322622. The cubic root of 23309144 is about 285.6551829177.

Adding to 23309144 its reverse (44190332), we get a palindrome (67499476).

The spelling of 23309144 in words is "twenty-three million, three hundred nine thousand, one hundred forty-four".