20116736 has 36 divisors (see below), whose sum is σ = 40471200. Its totient is φ = 9979392.

The previous prime is 20116727. The next prime is 20116739. The reversal of 20116736 is 63761102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20116739) 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, 45605 + ... + 46043.

It is an arithmetic number, because the mean of its divisors is an integer number (1124200).

Almost surely, 2^20116736 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 20116736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20235600).

20116736 is an abundant number, since it is smaller than the sum of its proper divisors (20354464).

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

20116736 is an equidigital number, since it uses as much as digits as its factorization.

20116736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20116736 is about 4485.1684472269. The cubic root of 20116736 is about 271.9688545653.

Adding to 20116736 its reverse (63761102), we get a palindrome (83877838).

The spelling of 20116736 in words is "twenty million, one hundred sixteen thousand, seven hundred thirty-six".