196635720 has 64 divisors (see below), whose sum is σ = 598014720. Its totient is φ = 51715584.

The previous prime is 196635683. The next prime is 196635721. The reversal of 196635720 is 27536691.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (196635721) 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 15 ways as a sum of consecutive naturals, for example, 2464 + ... + 19983.

It is an arithmetic number, because the mean of its divisors is an integer number (9343980).

Almost surely, 2^196635720 is an apocalyptic number.

196635720 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 196635720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299007360).

196635720 is an abundant number, since it is smaller than the sum of its proper divisors (401379000).

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

196635720 is a wasteful number, since it uses less digits than its factorization.

196635720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22534 (or 22530 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 196635720 is about 14022.6859053464. The cubic root of 196635720 is about 581.5059162122.

The spelling of 196635720 in words is "one hundred ninety-six million, six hundred thirty-five thousand, seven hundred twenty".