20554016 has 48 divisors (see below), whose sum is σ = 46811520. Its totient is φ = 8701440.

The previous prime is 20554013. The next prime is 20554049. The reversal of 20554016 is 61045502.

It is a junction number, because it is equal to n+sod(n) for n = 20553982 and 20554000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19421 + ... + 20451.

It is an arithmetic number, because the mean of its divisors is an integer number (975240).

Almost surely, 2^20554016 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 20554016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23405760).

20554016 is an abundant number, since it is smaller than the sum of its proper divisors (26257504).

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

20554016 is a wasteful number, since it uses less digits than its factorization.

20554016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20554016 is about 4533.6537141692. The cubic root of 20554016 is about 273.9253530649.

Adding to 20554016 its reverse (61045502), we get a palindrome (81599518).

The spelling of 20554016 in words is "twenty million, five hundred fifty-four thousand, sixteen".