20224345 has 4 divisors (see below), whose sum is σ = 24269220. Its totient is φ = 16179472.

The previous prime is 20224333. The next prime is 20224363. The reversal of 20224345 is 54342202.

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 3732624 + 16491721 = 1932^2 + 4061^2 .

It is a cyclic number.

It is not a de Polignac number, because 20224345 - 2¹¹ = 20222297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022430 + ... + 2022439.

It is an arithmetic number, because the mean of its divisors is an integer number (6067305).

Almost surely, 2^20224345 is an apocalyptic number.

It is an amenable number.

20224345 is a deficient number, since it is larger than the sum of its proper divisors (4044875).

20224345 is an equidigital number, since it uses as much as digits as its factorization.

20224345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044874.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20224345 is about 4497.1485410202. The cubic root of 20224345 is about 272.4529335427.

Adding to 20224345 its reverse (54342202), we get a palindrome (74566547).

The spelling of 20224345 in words is "twenty million, two hundred twenty-four thousand, three hundred forty-five".