205246430 has 16 divisors (see below), whose sum is σ = 369645984. Its totient is φ = 82053600.

The previous prime is 205246409. The next prime is 205246441. The reversal of 205246430 is 34642502.

It is a self number, because there is not a number n which added to its sum of digits gives 205246430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18455 + ... + 27405.

It is an arithmetic number, because the mean of its divisors is an integer number (23102874).

Almost surely, 2^205246430 is an apocalyptic number.

205246430 is a deficient number, since it is larger than the sum of its proper divisors (164399554).

205246430 is a wasteful number, since it uses less digits than its factorization.

205246430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 205246430 is about 14326.4241874935. The cubic root of 205246430 is about 589.8730263962.

Adding to 205246430 its reverse (34642502), we get a palindrome (239888932).

The spelling of 205246430 in words is "two hundred five million, two hundred forty-six thousand, four hundred thirty".