199830036 has 72 divisors (see below), whose sum is σ = 574330176. Its totient is φ = 53733120.

The previous prime is 199829983. The next prime is 199830047. The reversal of 199830036 is 630038991.

199830036 is a nontrivial binomial coefficient, being equal to C(19992, 2).

It is a super-2 number, since 2×199830036² = 79864086575522592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199829976 and 199830003.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1 + ... + 19991.

It is an arithmetic number, because the mean of its divisors is an integer number (7976808).

Almost surely, 2^199830036 is an apocalyptic number.

199830036 is the 19991-st triangular number and also the 9996-th hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199830036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287165088).

199830036 is an abundant number, since it is smaller than the sum of its proper divisors (374500140).

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

199830036 is a wasteful number, since it uses less digits than its factorization.

199830036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20029 (or 20020 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 199830036 is about 14136.1252116696. The cubic root of 199830036 is about 584.6378414433.

The spelling of 199830036 in words is "one hundred ninety-nine million, eight hundred thirty thousand, thirty-six".