23110640 has 40 divisors (see below), whose sum is σ = 61409760. Its totient is φ = 7923456.

The previous prime is 23110639. The next prime is 23110649. The reversal of 23110640 is 4601132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20075 + ... + 21194.

It is an arithmetic number, because the mean of its divisors is an integer number (1535244).

Almost surely, 2^23110640 is an apocalyptic number.

23110640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23110640 is an abundant number, since it is smaller than the sum of its proper divisors (38299120).

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

23110640 is a wasteful number, since it uses less digits than its factorization.

23110640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41289 (or 41283 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 23110640 is about 4807.3527018516. The cubic root of 23110640 is about 284.8419766222.

Adding to 23110640 its reverse (4601132), we get a palindrome (27711772).

The spelling of 23110640 in words is "twenty-three million, one hundred ten thousand, six hundred forty".