196728537600 has 720 divisors, whose sum is σ = 819973357632. Its totient is φ = 44108513280.

The previous prime is 196728537553. The next prime is 196728537619. The reversal of 196728537600 is 6735827691.

196728537600 is a `hidden beast` number, since 1 + 9 + 6 + 7 + 28 + 5 + 3 + 7 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×196728537600² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42736899 + ... + 42741501.

Almost surely, 2^196728537600 is an apocalyptic number.

196728537600 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 196728537600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409986678816).

196728537600 is an abundant number, since it is smaller than the sum of its proper divisors (623244820032).

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

196728537600 is a wasteful number, since it uses less digits than its factorization.

196728537600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697 (or 4673 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 196728537600 in words is "one hundred ninety-six billion, seven hundred twenty-eight million, five hundred thirty-seven thousand, six hundred".