23520145 has 16 divisors (see below), whose sum is σ = 32130432. Its totient is φ = 16360960.

The previous prime is 23520137. The next prime is 23520169. The reversal of 23520145 is 54102532.

It is not a de Polignac number, because 23520145 - 2³ = 23520137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8032 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (2008152).

Almost surely, 2^23520145 is an apocalyptic number.

It is an amenable number.

23520145 is a deficient number, since it is larger than the sum of its proper divisors (8610287).

23520145 is a wasteful number, since it uses less digits than its factorization.

23520145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18632.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23520145 is about 4849.7572104179. The cubic root of 23520145 is about 286.5145390480.

Adding to 23520145 its reverse (54102532), we get a palindrome (77622677).

The spelling of 23520145 in words is "twenty-three million, five hundred twenty thousand, one hundred forty-five".