199780430 has 64 divisors (see below), whose sum is σ = 397135872. Its totient is φ = 72030720.

The previous prime is 199780423. The next prime is 199780489. The reversal of 199780430 is 34087991.

It is a happy number.

199780430 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879977 + ... + 880203.

It is an arithmetic number, because the mean of its divisors is an integer number (6205248).

Almost surely, 2^199780430 is an apocalyptic number.

199780430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199780430 is a deficient number, since it is larger than the sum of its proper divisors (197355442).

199780430 is a wasteful number, since it uses less digits than its factorization.

199780430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 199780430 is about 14134.3705201187. The cubic root of 199780430 is about 584.5894604200.

The spelling of 199780430 in words is "one hundred ninety-nine million, seven hundred eighty thousand, four hundred thirty".