22306805 has 8 divisors (see below), whose sum is σ = 28342872. Its totient is φ = 16795648.

The previous prime is 22306789. The next prime is 22306807. The reversal of 22306805 is 50860322.

It can be written as a sum of positive squares in 4 ways, for example, as 12124324 + 10182481 = 3482^2 + 3191^2 .

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 22306805 - 2⁴ = 22306789 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 (22306807) 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, 131132 + ... + 131301.

It is an arithmetic number, because the mean of its divisors is an integer number (3542859).

Almost surely, 2^22306805 is an apocalyptic number.

It is an amenable number.

22306805 is a deficient number, since it is larger than the sum of its proper divisors (6036067).

22306805 is a wasteful number, since it uses less digits than its factorization.

22306805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262455.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22306805 is about 4723.0080457268. The cubic root of 22306805 is about 281.5004695509.

The spelling of 22306805 in words is "twenty-two million, three hundred six thousand, eight hundred five".