20516796 has 72 divisors (see below), whose sum is σ = 54249104. Its totient is φ = 6531840.

The previous prime is 20516791. The next prime is 20516803. The reversal of 20516796 is 69761502.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20516796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97131 + ... + 97341.

Almost surely, 2^20516796 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 20516796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27124552).

20516796 is an abundant number, since it is smaller than the sum of its proper divisors (33732308).

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

20516796 is a wasteful number, since it uses less digits than its factorization.

20516796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 20516796 is about 4529.5469972173. The cubic root of 20516796 is about 273.7599083172.

It can be divided in two parts, 20516 and 796, that added together give a palindrome (21312).

The spelling of 20516796 in words is "twenty million, five hundred sixteen thousand, seven hundred ninety-six".