23520535 has 4 divisors (see below), whose sum is σ = 28224648. Its totient is φ = 18816424.

The previous prime is 23520509. The next prime is 23520547. The reversal of 23520535 is 53502532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23520535 - 2¹¹ = 23518487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352049 + ... + 2352058.

It is an arithmetic number, because the mean of its divisors is an integer number (7056162).

Almost surely, 2^23520535 is an apocalyptic number.

23520535 is a deficient number, since it is larger than the sum of its proper divisors (4704113).

23520535 is an equidigital number, since it uses as much as digits as its factorization.

23520535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704112.

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

The square root of 23520535 is about 4849.7974184496. The cubic root of 23520535 is about 286.5161226557.

The spelling of 23520535 in words is "twenty-three million, five hundred twenty thousand, five hundred thirty-five".