22427881 has 8 divisors (see below), whose sum is σ = 25743744. Its totient is φ = 19140000.

The previous prime is 22427869. The next prime is 22427887. The reversal of 22427881 is 18872422.

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

It is a cyclic number.

It is not a de Polignac number, because 22427881 - 2⁷ = 22427753 is a prime.

It is a super-2 number, since 2×22427881² = 1006019692300322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22427887) 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 7 ways as a sum of consecutive naturals, for example, 5245 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (3217968).

Almost surely, 2^22427881 is an apocalyptic number.

It is an amenable number.

22427881 is a deficient number, since it is larger than the sum of its proper divisors (3315863).

22427881 is a wasteful number, since it uses less digits than its factorization.

22427881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13991.

The product of its digits is 14336, while the sum is 34.

The square root of 22427881 is about 4735.8083787248. The cubic root of 22427881 is about 282.0088565869.

The spelling of 22427881 in words is "twenty-two million, four hundred twenty-seven thousand, eight hundred eighty-one".