199224788 has 18 divisors (see below), whose sum is σ = 405565146. Its totient is φ = 85381968.

The previous prime is 199224787. The next prime is 199224797. The reversal of 199224788 is 887422991.

It can be written as a sum of positive squares in only one way, i.e., 195216784 + 4008004 = 13972^2 + 2002^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199224787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508031 + ... + 508422.

It is an arithmetic number, because the mean of its divisors is an integer number (22531397).

Almost surely, 2^199224788 is an apocalyptic number.

It is an amenable number.

199224788 is an abundant number, since it is smaller than the sum of its proper divisors (206340358).

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

199224788 is a wasteful number, since it uses less digits than its factorization.

199224788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016471 (or 1016462 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 199224788 is about 14114.7011303818. The cubic root of 199224788 is about 584.0469914336.

The spelling of 199224788 in words is "one hundred ninety-nine million, two hundred twenty-four thousand, seven hundred eighty-eight".