20323238 has 16 divisors (see below), whose sum is σ = 32912880. Its totient is φ = 9356256.

The previous prime is 20323201. The next prime is 20323267. The reversal of 20323238 is 83232302.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 13508 + ... + 14936.

It is an arithmetic number, because the mean of its divisors is an integer number (2057055).

Almost surely, 2^20323238 is an apocalyptic number.

20323238 is a deficient number, since it is larger than the sum of its proper divisors (12589642).

20323238 is a wasteful number, since it uses less digits than its factorization.

20323238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20323238 is about 4508.1302110742. The cubic root of 20323238 is about 272.8962917900.

The spelling of 20323238 in words is "twenty million, three hundred twenty-three thousand, two hundred thirty-eight".