23108440 has 48 divisors (see below), whose sum is σ = 55260000. Its totient is φ = 8695296.

The previous prime is 23108431. The next prime is 23108453. The reversal of 23108440 is 4480132.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10561 + ... + 12559.

It is an arithmetic number, because the mean of its divisors is an integer number (1151250).

Almost surely, 2^23108440 is an apocalyptic number.

23108440 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 23108440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27630000).

23108440 is an abundant number, since it is smaller than the sum of its proper divisors (32151560).

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

23108440 is a wasteful number, since it uses less digits than its factorization.

23108440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 23108440 is about 4807.1238802427. The cubic root of 23108440 is about 284.8329378961.

Adding to 23108440 its reverse (4480132), we get a palindrome (27588572).

The spelling of 23108440 in words is "twenty-three million, one hundred eight thousand, four hundred forty".