20123304 has 16 divisors (see below), whose sum is σ = 50308320. Its totient is φ = 6707760.

The previous prime is 20123293. The next prime is 20123339. The reversal of 20123304 is 40332102.

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 in 3 ways as a sum of consecutive naturals, for example, 419212 + ... + 419259.

It is an arithmetic number, because the mean of its divisors is an integer number (3144270).

Almost surely, 2^20123304 is an apocalyptic number.

20123304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20123304 is an abundant number, since it is smaller than the sum of its proper divisors (30185016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123304 is a wasteful number, since it uses less digits than its factorization.

20123304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838480 (or 838476 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20123304 is about 4485.9005784792. The cubic root of 20123304 is about 271.9984501065.

Adding to 20123304 its reverse (40332102), we get a palindrome (60455406).

The spelling of 20123304 in words is "twenty million, one hundred twenty-three thousand, three hundred four".