213004434 has 32 divisors (see below), whose sum is σ = 433661760. Its totient is φ = 69737472.

The previous prime is 213004417. The next prime is 213004439. The reversal of 213004434 is 434400312.

It is a self number, because there is not a number n which added to its sum of digits gives 213004434.

It is not an unprimeable number, because it can be changed into a prime (213004439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79582 + ... + 82214.

It is an arithmetic number, because the mean of its divisors is an integer number (13551930).

Almost surely, 2^213004434 is an apocalyptic number.

213004434 is an abundant number, since it is smaller than the sum of its proper divisors (220657326).

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

213004434 is a wasteful number, since it uses less digits than its factorization.

213004434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 213004434 is about 14594.6714248728. The cubic root of 213004434 is about 597.2134059693.

Adding to 213004434 its reverse (434400312), we get a palindrome (647404746).

The spelling of 213004434 in words is "two hundred thirteen million, four thousand, four hundred thirty-four".