199568140 has 24 divisors (see below), whose sum is σ = 433545840. Its totient is φ = 77074368.

The previous prime is 199568137. The next prime is 199568147. The reversal of 199568140 is 41865991.

199568140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (199568147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171462 + ... + 172621.

It is an arithmetic number, because the mean of its divisors is an integer number (18064410).

Almost surely, 2^199568140 is an apocalyptic number.

199568140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199568140 is an abundant number, since it is smaller than the sum of its proper divisors (233977700).

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

199568140 is a wasteful number, since it uses less digits than its factorization.

199568140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344121 (or 344119 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 199568140 is about 14126.8588157453. The cubic root of 199568140 is about 584.3823222128.

The spelling of 199568140 in words is "one hundred ninety-nine million, five hundred sixty-eight thousand, one hundred forty".