22308005 has 8 divisors (see below), whose sum is σ = 27208824. Its totient is φ = 17553600.

The previous prime is 22308001. The next prime is 22308043. The reversal of 22308005 is 50080322.

It can be written as a sum of positive squares in 4 ways, for example, as 982081 + 21325924 = 991^2 + 4618^2 .

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

It is not a de Polignac number, because 22308005 - 2² = 22308001 is a prime.

It is a super-3 number, since 3×22308005³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22308001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36266 + ... + 36875.

It is an arithmetic number, because the mean of its divisors is an integer number (3401103).

Almost surely, 2^22308005 is an apocalyptic number.

It is an amenable number.

22308005 is a deficient number, since it is larger than the sum of its proper divisors (4900819).

22308005 is an equidigital number, since it uses as much as digits as its factorization.

22308005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73207.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22308005 is about 4723.1350817016. The cubic root of 22308005 is about 281.5055172558.

Adding to 22308005 its reverse (50080322), we get a palindrome (72388327).

The spelling of 22308005 in words is "twenty-two million, three hundred eight thousand, five".