23820643 has 8 divisors (see below), whose sum is σ = 29698560. Its totient is φ = 18561480.

The previous prime is 23820619. The next prime is 23820659. The reversal of 23820643 is 34602832.

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

It is not a de Polignac number, because 23820643 - 2⁵ = 23820611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23820673) 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, 154603 + ... + 154756.

It is an arithmetic number, because the mean of its divisors is an integer number (3712320).

Almost surely, 2^23820643 is an apocalyptic number.

23820643 is a deficient number, since it is larger than the sum of its proper divisors (5877917).

23820643 is a wasteful number, since it uses less digits than its factorization.

23820643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309377.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 23820643 is about 4880.6396097233. The cubic root of 23820643 is about 287.7295678707.

The spelling of 23820643 in words is "twenty-three million, eight hundred twenty thousand, six hundred forty-three".