23505345 has 24 divisors (see below), whose sum is σ = 41207400. Its totient is φ = 12393216.

The previous prime is 23505319. The next prime is 23505353. The reversal of 23505345 is 54350532.

It can be written as a sum of positive squares in 4 ways, for example, as 147456 + 23357889 = 384^2 + 4833^2 .

It is not a de Polignac number, because 23505345 - 2⁶ = 23505281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1071 + ... + 6939.

It is an arithmetic number, because the mean of its divisors is an integer number (1716975).

Almost surely, 2^23505345 is an apocalyptic number.

It is an amenable number.

23505345 is a deficient number, since it is larger than the sum of its proper divisors (17702055).

23505345 is a wasteful number, since it uses less digits than its factorization.

23505345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969 (or 5966 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 23505345 is about 4848.2311207285. The cubic root of 23505345 is about 286.4544302219.

Adding to 23505345 its reverse (54350532), we get a palindrome (77855877).

The spelling of 23505345 in words is "twenty-three million, five hundred five thousand, three hundred forty-five".