22281005 has 8 divisors (see below), whose sum is σ = 26930400. Its totient is φ = 17696016.

The previous prime is 22280989. The next prime is 22281023. The reversal of 22281005 is 50018222.

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 22281005 - 2⁴ = 22280989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15335 + ... + 16724.

It is an arithmetic number, because the mean of its divisors is an integer number (3366300).

Almost surely, 2^22281005 is an apocalyptic number.

It is an amenable number.

22281005 is a deficient number, since it is larger than the sum of its proper divisors (4649395).

22281005 is a wasteful number, since it uses less digits than its factorization.

22281005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32203.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 22281005 is about 4720.2759453235. The cubic root of 22281005 is about 281.3919000818.

Adding to 22281005 its reverse (50018222), we get a palindrome (72299227).

The spelling of 22281005 in words is "twenty-two million, two hundred eighty-one thousand, five".