20204016 has 80 divisors (see below), whose sum is σ = 60186624. Its totient is φ = 5720832.

The previous prime is 20204003. The next prime is 20204017. The reversal of 20204016 is 61040202.

It is a junction number, because it is equal to n+sod(n) for n = 20203986 and 20204004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204017) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52561 + ... + 52943.

Almost surely, 2^20204016 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 20204016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30093312).

20204016 is an abundant number, since it is smaller than the sum of its proper divisors (39982608).

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

20204016 is a wasteful number, since it uses less digits than its factorization.

20204016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20204016 is about 4494.8877627812. The cubic root of 20204016 is about 272.3616153400.

Adding to 20204016 its reverse (61040202), we get a palindrome (81244218).

The spelling of 20204016 in words is "twenty million, two hundred four thousand, sixteen".