205130226 has 32 divisors (see below), whose sum is σ = 474145920. Its totient is φ = 57949056.

The previous prime is 205130221. The next prime is 205130227. The reversal of 205130226 is 622031502.

It is a super-2 number, since 2×205130226² = 84156819237622152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (205130221) by changing a digit.

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, 23701 + ... + 31176.

It is an arithmetic number, because the mean of its divisors is an integer number (14817060).

Almost surely, 2^205130226 is an apocalyptic number.

205130226 is an abundant number, since it is smaller than the sum of its proper divisors (269015694).

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

205130226 is a wasteful number, since it uses less digits than its factorization.

205130226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54978.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 205130226 is about 14322.3680304620. The cubic root of 205130226 is about 589.7616829324.

Adding to 205130226 its reverse (622031502), we get a palindrome (827161728).

The spelling of 205130226 in words is "two hundred five million, one hundred thirty thousand, two hundred twenty-six".