23420005 has 16 divisors (see below), whose sum is σ = 32215680. Its totient is φ = 16011072.

The previous prime is 23419997. The next prime is 23420017. The reversal of 23420005 is 50002432.

It is not a de Polignac number, because 23420005 - 2³ = 23419997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13867 + ... + 15463.

It is an arithmetic number, because the mean of its divisors is an integer number (2013480).

Almost surely, 2^23420005 is an apocalyptic number.

It is an amenable number.

23420005 is a deficient number, since it is larger than the sum of its proper divisors (8795675).

23420005 is a wasteful number, since it uses less digits than its factorization.

23420005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 23420005 is about 4839.4219696158. The cubic root of 23420005 is about 286.1073366001.

Adding to 23420005 its reverse (50002432), we get a palindrome (73422437).

The spelling of 23420005 in words is "twenty-three million, four hundred twenty thousand, five".