22981361 has 8 divisors (see below), whose sum is σ = 25353384. Its totient is φ = 20695680.

The previous prime is 22981327. The next prime is 22981367. The reversal of 22981361 is 16318922.

It can be written as a sum of positive squares in 4 ways, for example, as 323761 + 22657600 = 569^2 + 4760^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22981361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22981367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21026 + ... + 22091.

It is an arithmetic number, because the mean of its divisors is an integer number (3169173).

Almost surely, 2^22981361 is an apocalyptic number.

It is an amenable number.

22981361 is a deficient number, since it is larger than the sum of its proper divisors (2372023).

22981361 is a wasteful number, since it uses less digits than its factorization.

22981361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43171.

The product of its digits is 5184, while the sum is 32.

The square root of 22981361 is about 4793.8878793731. The cubic root of 22981361 is about 284.3098557216.

The spelling of 22981361 in words is "twenty-two million, nine hundred eighty-one thousand, three hundred sixty-one".