23910040 has 96 divisors (see below), whose sum is σ = 68331600. Its totient is φ = 7445760.

The previous prime is 23910023. The next prime is 23910043. The reversal of 23910040 is 4001932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23910043) 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 23 ways as a sum of consecutive naturals, for example, 21006 + ... + 22114.

Almost surely, 2^23910040 is an apocalyptic number.

23910040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23910040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34165800).

23910040 is an abundant number, since it is smaller than the sum of its proper divisors (44421560).

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

23910040 is a wasteful number, since it uses less digits than its factorization.

23910040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 23910040 is about 4889.7893615165. The cubic root of 23910040 is about 288.0890606763.

Adding to 23910040 its reverse (4001932), we get a palindrome (27911972).

The spelling of 23910040 in words is "twenty-three million, nine hundred ten thousand, forty".