196889680 has 120 divisors (see below), whose sum is σ = 511982856. Its totient is φ = 69995520.

The previous prime is 196889677. The next prime is 196889681. The reversal of 196889680 is 86988691.

It can be written as a sum of positive squares in 4 ways, for example, as 36917776 + 159971904 = 6076^2 + 12648^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196889681) 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 23 ways as a sum of consecutive naturals, for example, 999342 + ... + 999538.

Almost surely, 2^196889680 is an apocalyptic number.

196889680 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 196889680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255991428).

196889680 is an abundant number, since it is smaller than the sum of its proper divisors (315093176).

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

196889680 is a wasteful number, since it uses less digits than its factorization.

196889680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 196889680 is about 14031.7383099885. The cubic root of 196889680 is about 581.7561517084.

The spelling of 196889680 in words is "one hundred ninety-six million, eight hundred eighty-nine thousand, six hundred eighty".