23406643 has 12 divisors (see below), whose sum is σ = 26128704. Its totient is φ = 20822400.

The previous prime is 23406629. The next prime is 23406667. The reversal of 23406643 is 34660432.

It is not a de Polignac number, because 23406643 - 2¹³ = 23398451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23406343) 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 11 ways as a sum of consecutive naturals, for example, 97003 + ... + 97243.

It is an arithmetic number, because the mean of its divisors is an integer number (2177392).

Almost surely, 2^23406643 is an apocalyptic number.

23406643 is a deficient number, since it is larger than the sum of its proper divisors (2722061).

23406643 is an equidigital number, since it uses as much as digits as its factorization.

23406643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 23406643 is about 4838.0412358722. The cubic root of 23406643 is about 286.0529145577.

The spelling of 23406643 in words is "twenty-three million, four hundred six thousand, six hundred forty-three".