199987248 has 40 divisors (see below), whose sum is σ = 534452400. Its totient is φ = 64363264.

The previous prime is 199987241. The next prime is 199987253. The reversal of 199987248 is 842789991.

It is a super-2 number, since 2×199987248² = 79989798725227008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199987241) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70443 + ... + 73226.

It is an arithmetic number, because the mean of its divisors is an integer number (13361310).

Almost surely, 2^199987248 is an apocalyptic number.

It is an amenable number.

199987248 is an abundant number, since it is smaller than the sum of its proper divisors (334465152).

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

199987248 is a wasteful number, since it uses less digits than its factorization.

199987248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143709 (or 143703 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 57.

The square root of 199987248 is about 14141.6847652605. The cubic root of 199987248 is about 584.7911183537.

The spelling of 199987248 in words is "one hundred ninety-nine million, nine hundred eighty-seven thousand, two hundred forty-eight".