205244430 has 32 divisors (see below), whose sum is σ = 493388064. Its totient is φ = 54642816.

The previous prime is 205244419. The next prime is 205244447. The reversal of 205244430 is 34442502.

It is a self number, because there is not a number n which added to its sum of digits gives 205244430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14352 + ... + 24828.

It is an arithmetic number, because the mean of its divisors is an integer number (15418377).

Almost surely, 2^205244430 is an apocalyptic number.

205244430 is an abundant number, since it is smaller than the sum of its proper divisors (288143634).

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

205244430 is a wasteful number, since it uses less digits than its factorization.

205244430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11140.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 205244430 is about 14326.3543862352. The cubic root of 205244430 is about 589.8711104069.

Adding to 205244430 its reverse (34442502), we get a palindrome (239686932).

The spelling of 205244430 in words is "two hundred five million, two hundred forty-four thousand, four hundred thirty".