196644768 has 48 divisors (see below), whose sum is σ = 520289280. Its totient is φ = 65032128.

The previous prime is 196644743. The next prime is 196644769. The reversal of 196644768 is 867446691.

196644768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 196644768.

It is not an unprimeable number, because it can be changed into a prime (196644769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548321 + ... + 1548447.

It is an arithmetic number, because the mean of its divisors is an integer number (10839360).

Almost surely, 2^196644768 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 196644768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260144640).

196644768 is an abundant number, since it is smaller than the sum of its proper divisors (323644512).

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

196644768 is an frugal number, since it uses more digits than its factorization.

196644768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 132 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 196644768 is about 14023.0085217117. The cubic root of 196644768 is about 581.5148352171.

The spelling of 196644768 in words is "one hundred ninety-six million, six hundred forty-four thousand, seven hundred sixty-eight".