196443520 has 128 divisors (see below), whose sum is σ = 578168640. Its totient is φ = 62152704.

The previous prime is 196443491. The next prime is 196443523. The reversal of 196443520 is 25344691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196443523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56554 + ... + 59926.

Almost surely, 2^196443520 is an apocalyptic number.

196443520 is a gapful number since it is divisible by the number (10) 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 196443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289084320).

196443520 is an abundant number, since it is smaller than the sum of its proper divisors (381725120).

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

196443520 is a wasteful number, since it uses less digits than its factorization.

196443520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412 (or 3400 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 196443520 is about 14015.8310492100. The cubic root of 196443520 is about 581.3163916917.

The spelling of 196443520 in words is "one hundred ninety-six million, four hundred forty-three thousand, five hundred twenty".