23520513 has 8 divisors (see below), whose sum is σ = 32724288. Its totient is φ = 14998544.

The previous prime is 23520509. The next prime is 23520547. The reversal of 23520513 is 31502532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23520513 - 2² = 23520509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23520513.

It is not an unprimeable number, because it can be changed into a prime (23520713) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 170370 + ... + 170507.

It is an arithmetic number, because the mean of its divisors is an integer number (4090536).

Almost surely, 2^23520513 is an apocalyptic number.

23520513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23520513 is a deficient number, since it is larger than the sum of its proper divisors (9203775).

23520513 is a wasteful number, since it uses less digits than its factorization.

23520513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340903.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 23520513 is about 4849.7951503131. The cubic root of 23520513 is about 286.5160333245.

The spelling of 23520513 in words is "twenty-three million, five hundred twenty thousand, five hundred thirteen".