23400005 has 4 divisors (see below), whose sum is σ = 28080012. Its totient is φ = 18720000.

The previous prime is 23399953. The next prime is 23400023. The reversal of 23400005 is 50000432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11792356 + 11607649 = 3434^2 + 3407^2 .

It is not a de Polignac number, because 23400005 - 2¹² = 23395909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2339996 + ... + 2340005.

It is an arithmetic number, because the mean of its divisors is an integer number (7020003).

Almost surely, 2^23400005 is an apocalyptic number.

It is an amenable number.

23400005 is a deficient number, since it is larger than the sum of its proper divisors (4680007).

23400005 is an equidigital number, since it uses as much as digits as its factorization.

23400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680006.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 23400005 is about 4837.3551657905. The cubic root of 23400005 is about 286.0258709705.

Adding to 23400005 its reverse (50000432), we get a palindrome (73400437).

The spelling of 23400005 in words is "twenty-three million, four hundred thousand, five".