20223347 has 4 divisors (see below), whose sum is σ = 20525256. Its totient is φ = 19921440.

The previous prime is 20223341. The next prime is 20223361. The reversal of 20223347 is 74332202.

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

It is a cyclic number.

It is not a de Polignac number, because 20223347 - 2⁶ = 20223283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20223341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150854 + ... + 150987.

It is an arithmetic number, because the mean of its divisors is an integer number (5131314).

Almost surely, 2^20223347 is an apocalyptic number.

20223347 is a deficient number, since it is larger than the sum of its proper divisors (301909).

20223347 is an equidigital number, since it uses as much as digits as its factorization.

20223347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301908.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20223347 is about 4497.0375804523. The cubic root of 20223347 is about 272.4484519389.

Adding to 20223347 its reverse (74332202), we get a palindrome (94555549).

The spelling of 20223347 in words is "twenty million, two hundred twenty-three thousand, three hundred forty-seven".