20816796 has 96 divisors (see below), whose sum is σ = 65253888. Its totient is φ = 4988160.

The previous prime is 20816791. The next prime is 20816797. The reversal of 20816796 is 69761802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20816791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11146 + ... + 12878.

It is an arithmetic number, because the mean of its divisors is an integer number (679728).

Almost surely, 2^20816796 is an apocalyptic number.

20816796 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20816796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32626944).

20816796 is an abundant number, since it is smaller than the sum of its proper divisors (44437092).

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

20816796 is a wasteful number, since it uses less digits than its factorization.

20816796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 20816796 is about 4562.5427121288. The cubic root of 20816796 is about 275.0877780395.

It can be divided in two parts, 20816 and 796, that added together give a palindrome (21612).

The spelling of 20816796 in words is "twenty million, eight hundred sixteen thousand, seven hundred ninety-six".