196491680 has 192 divisors, whose sum is σ = 594397440. Its totient is φ = 59596800.

The previous prime is 196491677. The next prime is 196491703. The reversal of 196491680 is 86194691.

196491680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504926 + ... + 505314.

It is an arithmetic number, because the mean of its divisors is an integer number (3095820).

Almost surely, 2^196491680 is an apocalyptic number.

196491680 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 196491680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297198720).

196491680 is an abundant number, since it is smaller than the sum of its proper divisors (397905760).

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

196491680 is a wasteful number, since it uses less digits than its factorization.

196491680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 196491680 is about 14017.5490011628. The cubic root of 196491680 is about 581.3638928936.

The spelling of 196491680 in words is "one hundred ninety-six million, four hundred ninety-one thousand, six hundred eighty".