23318240 has 48 divisors (see below), whose sum is σ = 60102000. Its totient is φ = 8478720.

The previous prime is 23318227. The next prime is 23318249. The reversal of 23318240 is 4281332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23318249) 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 7 ways as a sum of consecutive naturals, for example, 4865 + ... + 8384.

It is an arithmetic number, because the mean of its divisors is an integer number (1252125).

Almost surely, 2^23318240 is an apocalyptic number.

23318240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23318240 is an abundant number, since it is smaller than the sum of its proper divisors (36783760).

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

23318240 is a wasteful number, since it uses less digits than its factorization.

23318240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13275 (or 13267 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 23318240 is about 4828.8963542408. The cubic root of 23318240 is about 285.6923354566.

Adding to 23318240 its reverse (4281332), we get a palindrome (27599572).

The spelling of 23318240 in words is "twenty-three million, three hundred eighteen thousand, two hundred forty".