22404805 has 4 divisors (see below), whose sum is σ = 26885772. Its totient is φ = 17923840.

The previous prime is 22404803. The next prime is 22404859. The reversal of 22404805 is 50840422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6548481 + 15856324 = 2559^2 + 3982^2 .

It is not a de Polignac number, because 22404805 - 2¹ = 22404803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22404805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240476 + ... + 2240485.

It is an arithmetic number, because the mean of its divisors is an integer number (6721443).

Almost surely, 2^22404805 is an apocalyptic number.

It is an amenable number.

22404805 is a deficient number, since it is larger than the sum of its proper divisors (4480967).

22404805 is an equidigital number, since it uses as much as digits as its factorization.

22404805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480966.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 22404805 is about 4733.3714200346. The cubic root of 22404805 is about 281.9121039549.

The spelling of 22404805 in words is "twenty-two million, four hundred four thousand, eight hundred five".