20323228 has 36 divisors (see below), whose sum is σ = 39036816. Its totient is φ = 9225600.

The previous prime is 20323201. The next prime is 20323267. The reversal of 20323228 is 82232302.

It is a junction number, because it is equal to n+sod(n) for n = 20323199 and 20323208.

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 in 11 ways as a sum of consecutive naturals, for example, 65193 + ... + 65503.

It is an arithmetic number, because the mean of its divisors is an integer number (1084356).

Almost surely, 2^20323228 is an apocalyptic number.

It is an amenable number.

20323228 is a deficient number, since it is larger than the sum of its proper divisors (18713588).

20323228 is a wasteful number, since it uses less digits than its factorization.

20323228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20323228 is about 4508.1291019668. The cubic root of 20323228 is about 272.8962470307.

The spelling of 20323228 in words is "twenty million, three hundred twenty-three thousand, two hundred twenty-eight".