196690900 has 108 divisors (see below), whose sum is σ = 501835068. Its totient is φ = 66716160.

The previous prime is 196690891. The next prime is 196690919. The reversal of 196690900 is 9096691.

It can be written as a sum of positive squares in 6 ways, for example, as 6140484 + 190550416 = 2478^2 + 13804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 671154 + ... + 671446.

It is an arithmetic number, because the mean of its divisors is an integer number (4646621).

Almost surely, 2^196690900 is an apocalyptic number.

196690900 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 196690900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250917534).

196690900 is an abundant number, since it is smaller than the sum of its proper divisors (305144168).

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

196690900 is a wasteful number, since it uses less digits than its factorization.

196690900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 196690900 is about 14024.6532933973. The cubic root of 196690900 is about 581.5603052714.

The spelling of 196690900 in words is "one hundred ninety-six million, six hundred ninety thousand, nine hundred".