22913147 has 2 divisors, whose sum is σ = 22913148. Its totient is φ = 22913146.

The previous prime is 22913141. The next prime is 22913171. The reversal of 22913147 is 74131922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22913147 - 2⁴ = 22913131 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22913141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11456573 + 11456574.

It is an arithmetic number, because the mean of its divisors is an integer number (11456574).

Almost surely, 2^22913147 is an apocalyptic number.

22913147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22913147 is an equidigital number, since it uses as much as digits as its factorization.

22913147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 22913147 is about 4786.7679074716. The cubic root of 22913147 is about 284.0282777834.

The spelling of 22913147 in words is "twenty-two million, nine hundred thirteen thousand, one hundred forty-seven".