22965981 has 8 divisors (see below), whose sum is σ = 30645024. Its totient is φ = 15298800.

The previous prime is 22965961. The next prime is 22965989. The reversal of 22965981 is 18956922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22965981 - 2¹⁰ = 22964957 is a prime.

It is a super-2 number, since 2×22965981² = 1054872566584722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22965989) 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 7 ways as a sum of consecutive naturals, for example, 3690 + ... + 7716.

It is an arithmetic number, because the mean of its divisors is an integer number (3830628).

Almost surely, 2^22965981 is an apocalyptic number.

It is an amenable number.

22965981 is a deficient number, since it is larger than the sum of its proper divisors (7679043).

22965981 is a wasteful number, since it uses less digits than its factorization.

22965981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5931.

The product of its digits is 77760, while the sum is 42.

The square root of 22965981 is about 4792.2834849370. The cubic root of 22965981 is about 284.2464179151.

The spelling of 22965981 in words is "twenty-two million, nine hundred sixty-five thousand, nine hundred eighty-one".