23040340 has 48 divisors (see below), whose sum is σ = 50061312. Its totient is φ = 8902656.

The previous prime is 23040301. The next prime is 23040349. The reversal of 23040340 is 4304032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040349) 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 15 ways as a sum of consecutive naturals, for example, 119284 + ... + 119476.

It is an arithmetic number, because the mean of its divisors is an integer number (1042944).

Almost surely, 2^23040340 is an apocalyptic number.

23040340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23040340 is an abundant number, since it is smaller than the sum of its proper divisors (27020972).

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

23040340 is a wasteful number, since it uses less digits than its factorization.

23040340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23040340 is about 4800.0354165360. The cubic root of 23040340 is about 284.5528640557.

Adding to 23040340 its reverse (4304032), we get a palindrome (27344372).

The spelling of 23040340 in words is "twenty-three million, forty thousand, three hundred forty".