23640533 has 8 divisors (see below), whose sum is σ = 27476160. Its totient is φ = 19919520.

The previous prime is 23640517. The next prime is 23640563. The reversal of 23640533 is 33504632.

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 23640533 - 2⁴ = 23640517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23640563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28208 + ... + 29033.

It is an arithmetic number, because the mean of its divisors is an integer number (3434520).

Almost surely, 2^23640533 is an apocalyptic number.

It is an amenable number.

23640533 is a deficient number, since it is larger than the sum of its proper divisors (3835627).

23640533 is an equidigital number, since it uses as much as digits as its factorization.

23640533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57307.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 23640533 is about 4862.1531238742. The cubic root of 23640533 is about 287.0025494802.

The spelling of 23640533 in words is "twenty-three million, six hundred forty thousand, five hundred thirty-three".