196605820 has 24 divisors (see below), whose sum is σ = 415160928. Its totient is φ = 78206400.

The previous prime is 196605809. The next prime is 196605839. The reversal of 196605820 is 28506691.

It is a self number, because there is not a number n which added to its sum of digits gives 196605820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23536 + ... + 30775.

It is an arithmetic number, because the mean of its divisors is an integer number (17298372).

Almost surely, 2^196605820 is an apocalyptic number.

196605820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196605820 is an abundant number, since it is smaller than the sum of its proper divisors (218555108).

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

196605820 is a wasteful number, since it uses less digits than its factorization.

196605820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54501 (or 54499 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 196605820 is about 14021.6197352517. The cubic root of 196605820 is about 581.4764405431.

The spelling of 196605820 in words is "one hundred ninety-six million, six hundred five thousand, eight hundred twenty".