199986288 has 80 divisors (see below), whose sum is σ = 546155520. Its totient is φ = 62929152.

The previous prime is 199986287. The next prime is 199986299. The reversal of 199986288 is 882689991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199986287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86070 + ... + 88362.

It is an arithmetic number, because the mean of its divisors is an integer number (6826944).

Almost surely, 2^199986288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199986288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273077760).

199986288 is an abundant number, since it is smaller than the sum of its proper divisors (346169232).

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

199986288 is a wasteful number, since it uses less digits than its factorization.

199986288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406 (or 2400 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 60.

The square root of 199986288 is about 14141.6508230121. The cubic root of 199986288 is about 584.7901826267.

The spelling of 199986288 in words is "one hundred ninety-nine million, nine hundred eighty-six thousand, two hundred eighty-eight".