196391568 has 80 divisors (see below), whose sum is σ = 521680896. Its totient is φ = 63634560.

The previous prime is 196391563. The next prime is 196391593. The reversal of 196391568 is 865193691.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (196391563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593163 + ... + 593493.

Almost surely, 2^196391568 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 196391568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260840448).

196391568 is an abundant number, since it is smaller than the sum of its proper divisors (325289328).

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

196391568 is a wasteful number, since it uses less digits than its factorization.

196391568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 646 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 196391568 is about 14013.9775938168. The cubic root of 196391568 is about 581.2651416567.

The spelling of 196391568 in words is "one hundred ninety-six million, three hundred ninety-one thousand, five hundred sixty-eight".