195999800 has 72 divisors (see below), whose sum is σ = 484224960. Its totient is φ = 73766400.

The previous prime is 195999787. The next prime is 195999847. The reversal of 195999800 is 8999591.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56105 + ... + 59495.

Almost surely, 2^195999800 is an apocalyptic number.

195999800 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 195999800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242112480).

195999800 is an abundant number, since it is smaller than the sum of its proper divisors (288225160).

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

195999800 is a wasteful number, since it uses less digits than its factorization.

195999800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441 (or 3415 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 50.

The square root of 195999800 is about 13999.9928571410. The cubic root of 195999800 is about 580.8783757786.

It can be divided in two parts, 19599 and 9800, that multiplied together give a triangular number (192070200 = T₁₉₅₉₉).

The spelling of 195999800 in words is "one hundred ninety-five million, nine hundred ninety-nine thousand, eight hundred".