20204112 has 20 divisors (see below), whose sum is σ = 52194080. Its totient is φ = 6734688.

The previous prime is 20204101. The next prime is 20204113. The reversal of 20204112 is 21140202.

It is a super-2 number, since 2×20204112² = 816412283417088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210412 + ... + 210507.

It is an arithmetic number, because the mean of its divisors is an integer number (2609704).

Almost surely, 2^20204112 is an apocalyptic number.

It is an amenable number.

20204112 is an abundant number, since it is smaller than the sum of its proper divisors (31989968).

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

20204112 is a wasteful number, since it uses less digits than its factorization.

20204112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420930 (or 420924 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20204112 is about 4494.8984415668. The cubic root of 20204112 is about 272.3620467175.

Adding to 20204112 its reverse (21140202), we get a palindrome (41344314).

The spelling of 20204112 in words is "twenty million, two hundred four thousand, one hundred twelve".