22243345 has 16 divisors (see below), whose sum is σ = 27333072. Its totient is φ = 17372160.

The previous prime is 22243321. The next prime is 22243349. The reversal of 22243345 is 54334222.

It can be written as a sum of positive squares in 8 ways, for example, as 13315201 + 8928144 = 3649^2 + 2988^2 .

It is not a de Polignac number, because 22243345 - 2⁵ = 22243313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22243349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70909 + ... + 71221.

It is an arithmetic number, because the mean of its divisors is an integer number (1708317).

Almost surely, 2^22243345 is an apocalyptic number.

It is an amenable number.

22243345 is a deficient number, since it is larger than the sum of its proper divisors (5089727).

22243345 is a wasteful number, since it uses less digits than its factorization.

22243345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 5760, while the sum is 25.

The square root of 22243345 is about 4716.2850846826. The cubic root of 22243345 is about 281.2332717623.

Adding to 22243345 its reverse (54334222), we get a palindrome (76577567).

The spelling of 22243345 in words is "twenty-two million, two hundred forty-three thousand, three hundred forty-five".