20323384 has 8 divisors (see below), whose sum is σ = 38106360. Its totient is φ = 10161688.

The previous prime is 20323379. The next prime is 20323423. The reversal of 20323384 is 48332302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20323384² = 826079874422912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270204 + ... + 1270219.

It is an arithmetic number, because the mean of its divisors is an integer number (4763295).

Almost surely, 2^20323384 is an apocalyptic number.

It is an amenable number.

20323384 is a deficient number, since it is larger than the sum of its proper divisors (17782976).

20323384 is a wasteful number, since it uses less digits than its factorization.

20323384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540429 (or 2540425 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20323384 is about 4508.1464040113. The cubic root of 20323384 is about 272.8969452745.

Adding to 20323384 its reverse (48332302), we get a palindrome (68655686).

The spelling of 20323384 in words is "twenty million, three hundred twenty-three thousand, three hundred eighty-four".