20204316 has 60 divisors (see below), whose sum is σ = 57629880. Its totient is φ = 6121440.
The previous prime is 20204311. The next prime is 20204323. The reversal of 20204316 is 61340202.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20204311) 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 19 ways as a sum of consecutive naturals, for example, 730 + ... + 6398.
It is an arithmetic number, because the mean of its divisors is an integer number (960498).
Almost surely, 220204316 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 20204316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28814940).
20204316 is an abundant number, since it is smaller than the sum of its proper divisors (37425564).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20204316 is a wasteful number, since it uses less digits than its factorization.
20204316 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5696 (or 5685 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 20204316 is about 4494.9211339021. The cubic root of 20204316 is about 272.3629633901.
Adding to 20204316 its reverse (61340202), we get a palindrome (81544518).
It can be divided in two parts, 2020 and 4316, that added together give a palindrome (6336).
The spelling of 20204316 in words is "twenty million, two hundred four thousand, three hundred sixteen".
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