199241536 has 70 divisors (see below), whose sum is σ = 432245770. Its totient is φ = 91113984.

The previous prime is 199241531. The next prime is 199241569. The reversal of 199241536 is 635142991.

It can be written as a sum of positive squares in 5 ways, for example, as 153760000 + 45481536 = 12400^2 + 6744^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199241531) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1827850 + ... + 1827958.

Almost surely, 2^199241536 is an apocalyptic number.

199241536 is a gapful number since it is divisible by the number (16) 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 199241536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216122885).

199241536 is an abundant number, since it is smaller than the sum of its proper divisors (233004234).

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

199241536 is an frugal number, since it uses more digits than its factorization.

199241536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 124 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 199241536 is about 14115.2944000471. The cubic root of 199241536 is about 584.0633571095.

The spelling of 199241536 in words is "one hundred ninety-nine million, two hundred forty-one thousand, five hundred thirty-six".