23535520 has 24 divisors (see below), whose sum is σ = 55603044. Its totient is φ = 9414144.

The previous prime is 23535503. The next prime is 23535529. The reversal of 23535520 is 2553532.

It can be written as a sum of positive squares in 2 ways, for example, as 22543504 + 992016 = 4748^2 + 996^2 .

It is not an unprimeable number, because it can be changed into a prime (23535529) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 73389 + ... + 73708.

Almost surely, 2^23535520 is an apocalyptic number.

23535520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23535520 is an abundant number, since it is smaller than the sum of its proper divisors (32067524).

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

23535520 is a wasteful number, since it uses less digits than its factorization.

23535520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147112 (or 147104 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 23535520 is about 4851.3420823521. The cubic root of 23535520 is about 286.5769564850.

The spelling of 23535520 in words is "twenty-three million, five hundred thirty-five thousand, five hundred twenty".