20323222 has 4 divisors (see below), whose sum is σ = 30484836. Its totient is φ = 10161610.

The previous prime is 20323201. The next prime is 20323267. The reversal of 20323222 is 22232302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22232302 = 2 ⋅11116151.

It is a super-2 number, since 2×20323222² = 826066704922568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20323196 and 20323205.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5080804 + ... + 5080807.

It is an arithmetic number, because the mean of its divisors is an integer number (7621209).

Almost surely, 2^20323222 is an apocalyptic number.

20323222 is a deficient number, since it is larger than the sum of its proper divisors (10161614).

20323222 is a wasteful number, since it uses less digits than its factorization.

20323222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161613.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20323222 is about 4508.1284365022. The cubic root of 20323222 is about 272.8962201751.

Adding to 20323222 its reverse (22232302), we get a palindrome (42555524).

The spelling of 20323222 in words is "twenty million, three hundred twenty-three thousand, two hundred twenty-two".