20323004 has 48 divisors (see below), whose sum is σ = 40101600. Its totient is φ = 8951040.

The previous prime is 20322983. The next prime is 20323013. The reversal of 20323004 is 40032302.

It is a self number, because there is not a number n which added to its sum of digits gives 20323004.

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 15 ways as a sum of consecutive naturals, for example, 136322 + ... + 136470.

It is an arithmetic number, because the mean of its divisors is an integer number (835450).

Almost surely, 2^20323004 is an apocalyptic number.

It is an amenable number.

20323004 is a deficient number, since it is larger than the sum of its proper divisors (19778596).

20323004 is a wasteful number, since it uses less digits than its factorization.

20323004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20323004 is about 4508.1042578893. The cubic root of 20323004 is about 272.8952444179.

Adding to 20323004 its reverse (40032302), we get a palindrome (60355306).

The spelling of 20323004 in words is "twenty million, three hundred twenty-three thousand, four".