200020434 has 16 divisors (see below), whose sum is σ = 409344672. Its totient is φ = 65122848.

The previous prime is 200020433. The next prime is 200020439. The reversal of 200020434 is 434020002.

It is a happy number.

200020434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200020433) 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, 387379 + ... + 387894.

It is an arithmetic number, because the mean of its divisors is an integer number (25584042).

Almost surely, 2^200020434 is an apocalyptic number.

200020434 is an abundant number, since it is smaller than the sum of its proper divisors (209324238).

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

200020434 is a wasteful number, since it uses less digits than its factorization.

200020434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775321.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 200020434 is about 14142.8580562770. The cubic root of 200020434 is about 584.8234634238.

Adding to 200020434 its reverse (434020002), we get a palindrome (634040436).

The spelling of 200020434 in words is "two hundred million, twenty thousand, four hundred thirty-four".