196988520 has 128 divisors (see below), whose sum is σ = 636387840. Its totient is φ = 48599040.

The previous prime is 196988507. The next prime is 196988521. The reversal of 196988520 is 25889691.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 196988520.

It is not an unprimeable number, because it can be changed into a prime (196988521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123649 + ... + 125231.

It is an arithmetic number, because the mean of its divisors is an integer number (4971780).

Almost surely, 2^196988520 is an apocalyptic number.

196988520 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 196988520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318193920).

196988520 is an abundant number, since it is smaller than the sum of its proper divisors (439399320).

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

196988520 is a wasteful number, since it uses less digits than its factorization.

196988520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 196988520 is about 14035.2598835932. The cubic root of 196988520 is about 581.8534839790.

The spelling of 196988520 in words is "one hundred ninety-six million, nine hundred eighty-eight thousand, five hundred twenty".