20616696 has 96 divisors (see below), whose sum is σ = 58687200. Its totient is φ = 6531840.

The previous prime is 20616677. The next prime is 20616697. The reversal of 20616696 is 69661602.

It is a happy number.

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 20616696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616697) 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, 189090 + ... + 189198.

It is an arithmetic number, because the mean of its divisors is an integer number (611325).

Almost surely, 2^20616696 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 20616696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29343600).

20616696 is an abundant number, since it is smaller than the sum of its proper divisors (38070504).

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

20616696 is a wasteful number, since it uses less digits than its factorization.

20616696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 20616696 is about 4540.5611987947. The cubic root of 20616696 is about 274.2035179671.

It can be divided in two parts, 20616 and 696, that added together give a palindrome (21312).

The spelling of 20616696 in words is "twenty million, six hundred sixteen thousand, six hundred ninety-six".