20116650 has 48 divisors (see below), whose sum is σ = 51121728. Its totient is φ = 5232000.

The previous prime is 20116637. The next prime is 20116667. The reversal of 20116650 is 5661102.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4515 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (1065036).

Almost surely, 2^20116650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20116650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25560864).

20116650 is an abundant number, since it is smaller than the sum of its proper divisors (31005078).

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

20116650 is a wasteful number, since it uses less digits than its factorization.

20116650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327 (or 3322 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20116650 is about 4485.1588600628. The cubic root of 20116650 is about 271.9684670048.

Adding to 20116650 its reverse (5661102), we get a palindrome (25777752).

The spelling of 20116650 in words is "twenty million, one hundred sixteen thousand, six hundred fifty".