20112304 has 80 divisors (see below), whose sum is σ = 43997184. Its totient is φ = 8870400.

The previous prime is 20112277. The next prime is 20112319. The reversal of 20112304 is 40321102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467707 + ... + 467749.

Almost surely, 2^20112304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21998592).

20112304 is an abundant number, since it is smaller than the sum of its proper divisors (23884880).

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

20112304 is a wasteful number, since it uses less digits than its factorization.

20112304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20112304 is about 4484.6743471516. The cubic root of 20112304 is about 271.9488802432.

Adding to 20112304 its reverse (40321102), we get a palindrome (60433406).

The spelling of 20112304 in words is "twenty million, one hundred twelve thousand, three hundred four".