23105560 has 16 divisors (see below), whose sum is σ = 51987600. Its totient is φ = 9242208.

The previous prime is 23105549. The next prime is 23105573. The reversal of 23105560 is 6550132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288780 + ... + 288859.

It is an arithmetic number, because the mean of its divisors is an integer number (3249225).

Almost surely, 2^23105560 is an apocalyptic number.

23105560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23105560 is an abundant number, since it is smaller than the sum of its proper divisors (28882040).

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

23105560 is a wasteful number, since it uses less digits than its factorization.

23105560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577650 (or 577646 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 23105560 is about 4806.8243154915. The cubic root of 23105560 is about 284.8211045148.

Adding to 23105560 its reverse (6550132), we get a palindrome (29655692).

The spelling of 23105560 in words is "twenty-three million, one hundred five thousand, five hundred sixty".