22281871 has 8 divisors (see below), whose sum is σ = 23546880. Its totient is φ = 21041592.

The previous prime is 22281829. The next prime is 22281877. The reversal of 22281871 is 17818222.

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 22281871 - 2¹⁹ = 21757583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22281877) 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, 4315 + ... + 7948.

It is an arithmetic number, because the mean of its divisors is an integer number (2943360).

Almost surely, 2^22281871 is an apocalyptic number.

22281871 is a deficient number, since it is larger than the sum of its proper divisors (1265009).

22281871 is a wasteful number, since it uses less digits than its factorization.

22281871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12365.

The product of its digits is 3584, while the sum is 31.

The square root of 22281871 is about 4720.3676763574. The cubic root of 22281871 is about 281.3955456719.

The spelling of 22281871 in words is "twenty-two million, two hundred eighty-one thousand, eight hundred seventy-one".