196785780 has 24 divisors (see below), whose sum is σ = 551000352. Its totient is φ = 52476192.

The previous prime is 196785751. The next prime is 196785781. The reversal of 196785780 is 87587691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196785781) 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 7 ways as a sum of consecutive naturals, for example, 1639822 + ... + 1639941.

It is an arithmetic number, because the mean of its divisors is an integer number (22958348).

Almost surely, 2^196785780 is an apocalyptic number.

196785780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196785780 is an abundant number, since it is smaller than the sum of its proper divisors (354214572).

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

196785780 is a wasteful number, since it uses less digits than its factorization.

196785780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279775 (or 3279773 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The square root of 196785780 is about 14028.0355003828. The cubic root of 196785780 is about 581.6538014996.

The spelling of 196785780 in words is "one hundred ninety-six million, seven hundred eighty-five thousand, seven hundred eighty".