22985971 has 4 divisors (see below), whose sum is σ = 23047000. Its totient is φ = 22924944.

The previous prime is 22985957. The next prime is 22986001. The reversal of 22985971 is 17958922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17958922 = 2 ⋅8979461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22985971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22983971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29946 + ... + 30703.

It is an arithmetic number, because the mean of its divisors is an integer number (5761750).

Almost surely, 2^22985971 is an apocalyptic number.

22985971 is a deficient number, since it is larger than the sum of its proper divisors (61029).

22985971 is an equidigital number, since it uses as much as digits as its factorization.

22985971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61028.

The product of its digits is 90720, while the sum is 43.

The square root of 22985971 is about 4794.3686758530. The cubic root of 22985971 is about 284.3288650513.

The spelling of 22985971 in words is "twenty-two million, nine hundred eighty-five thousand, nine hundred seventy-one".