199640230 has 32 divisors (see below), whose sum is σ = 376316928. Its totient is φ = 76111200.

The previous prime is 199640227. The next prime is 199640237. The reversal of 199640230 is 32046991.

199640230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199640237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70135 + ... + 72925.

It is an arithmetic number, because the mean of its divisors is an integer number (11759904).

Almost surely, 2^199640230 is an apocalyptic number.

199640230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199640230 is a deficient number, since it is larger than the sum of its proper divisors (176676698).

199640230 is a wasteful number, since it uses less digits than its factorization.

199640230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 199640230 is about 14129.4101079981. The cubic root of 199640230 is about 584.4526792179.

The spelling of 199640230 in words is "one hundred ninety-nine million, six hundred forty thousand, two hundred thirty".