22907947 has 4 divisors (see below), whose sum is σ = 22917960. Its totient is φ = 22897936.

The previous prime is 22907933. The next prime is 22908007. The reversal of 22907947 is 74970922.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22907947 - 2²³ = 14519339 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22907447) 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 3 ways as a sum of consecutive naturals, for example, 303 + ... + 6775.

It is an arithmetic number, because the mean of its divisors is an integer number (5729490).

Almost surely, 2^22907947 is an apocalyptic number.

22907947 is a deficient number, since it is larger than the sum of its proper divisors (10013).

22907947 is an equidigital number, since it uses as much as digits as its factorization.

22907947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 22907947 is about 4786.2247126519. The cubic root of 22907947 is about 284.0067899917.

The spelling of 22907947 in words is "twenty-two million, nine hundred seven thousand, nine hundred forty-seven".