199805034 has 64 divisors (see below), whose sum is σ = 477550080. Its totient is φ = 54928320.

The previous prime is 199805033. The next prime is 199805057. The reversal of 199805034 is 430508991.

199805034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199805034² = 79844103223482312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199804983 and 199805001.

It is not an unprimeable number, because it can be changed into a prime (199805033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48649 + ... + 52595.

It is an arithmetic number, because the mean of its divisors is an integer number (7461720).

Almost surely, 2^199805034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199805034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238775040).

199805034 is an abundant number, since it is smaller than the sum of its proper divisors (277745046).

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

199805034 is a wasteful number, since it uses less digits than its factorization.

199805034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 199805034 is about 14135.2408539791. The cubic root of 199805034 is about 584.6134578467.

The spelling of 199805034 in words is "one hundred ninety-nine million, eight hundred five thousand, thirty-four".