205226340 has 48 divisors (see below), whose sum is σ = 626875200. Its totient is φ = 49751680.

The previous prime is 205226339. The next prime is 205226369. The reversal of 205226340 is 43622502.

It is a self number, because there is not a number n which added to its sum of digits gives 205226340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154815 + ... + 156134.

It is an arithmetic number, because the mean of its divisors is an integer number (13059900).

Almost surely, 2^205226340 is an apocalyptic number.

205226340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205226340 is an abundant number, since it is smaller than the sum of its proper divisors (421648860).

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

205226340 is a wasteful number, since it uses less digits than its factorization.

205226340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310972 (or 310970 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 205226340 is about 14325.7230184029. The cubic root of 205226340 is about 589.8537797183.

Adding to 205226340 its reverse (43622502), we get a palindrome (248848842).

It can be divided in two parts, 20522 and 6340, that added together give a palindrome (26862).

The spelling of 205226340 in words is "two hundred five million, two hundred twenty-six thousand, three hundred forty".