20042304 has 56 divisors (see below), whose sum is σ = 54181248. Its totient is φ = 6535680.

The previous prime is 20042299. The next prime is 20042327. The reversal of 20042304 is 40324002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7914 + ... + 10134.

Almost surely, 2^20042304 is an apocalyptic number.

20042304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20042304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27090624).

20042304 is an abundant number, since it is smaller than the sum of its proper divisors (34138944).

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

20042304 is a wasteful number, since it uses less digits than its factorization.

20042304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283 (or 2273 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20042304 is about 4476.8631875455. The cubic root of 20042304 is about 271.6330114171.

Adding to 20042304 its reverse (40324002), we get a palindrome (60366306).

The spelling of 20042304 in words is "twenty million, forty-two thousand, three hundred four".