23005906 has 64 divisors (see below), whose sum is σ = 45711360. Its totient is φ = 8424000.

The previous prime is 23005883. The next prime is 23005909. The reversal of 23005906 is 60950032.

It is not an unprimeable number, because it can be changed into a prime (23005909) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 291175 + ... + 291253.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^23005906 is an apocalyptic number.

23005906 is a deficient number, since it is larger than the sum of its proper divisors (22705454).

23005906 is a wasteful number, since it uses less digits than its factorization.

23005906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 23005906 is about 4796.4472268545. The cubic root of 23005906 is about 284.4110377547.

Adding to 23005906 its reverse (60950032), we get a palindrome (83955938).

The spelling of 23005906 in words is "twenty-three million, five thousand, nine hundred six".