20416550 has 48 divisors (see below), whose sum is σ = 47354112. Its totient is φ = 6362400.

The previous prime is 20416549. The next prime is 20416597. The reversal of 20416550 is 5561402.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1199 + ... + 6501.

It is an arithmetic number, because the mean of its divisors is an integer number (986544).

Almost surely, 2^20416550 is an apocalyptic number.

20416550 is an abundant number, since it is smaller than the sum of its proper divisors (26937562).

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

20416550 is a wasteful number, since it uses less digits than its factorization.

20416550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333 (or 5328 counting only the distinct ones).

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

The square root of 20416550 is about 4518.4676606124. The cubic root of 20416550 is about 273.3133123679.

Adding to 20416550 its reverse (5561402), we get a palindrome (25977952).

The spelling of 20416550 in words is "twenty million, four hundred sixteen thousand, five hundred fifty".