199227798 has 48 divisors (see below), whose sum is σ = 538177536. Its totient is φ = 51747120.

The previous prime is 199227797. The next prime is 199227799. The reversal of 199227798 is 897722991.

It is an interprime number because it is at equal distance from previous prime (199227797) and next prime (199227799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199227797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70486 + ... + 73257.

It is an arithmetic number, because the mean of its divisors is an integer number (11212032).

Almost surely, 2^199227798 is an apocalyptic number.

199227798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

199227798 is an abundant number, since it is smaller than the sum of its proper divisors (338949738).

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

199227798 is a wasteful number, since it uses less digits than its factorization.

199227798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143769 (or 143766 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 199227798 is about 14114.8077563954. The cubic root of 199227798 is about 584.0499327888.

The spelling of 199227798 in words is "one hundred ninety-nine million, two hundred twenty-seven thousand, seven hundred ninety-eight".