205288212 has 24 divisors (see below), whose sum is σ = 480160800. Its totient is φ = 68264416.

The previous prime is 205288211. The next prime is 205288273. The reversal of 205288212 is 212882502.

It is a self number, because there is not a number n which added to its sum of digits gives 205288212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205288211) 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 7 ways as a sum of consecutive naturals, for example, 15387 + ... + 25442.

It is an arithmetic number, because the mean of its divisors is an integer number (20006700).

Almost surely, 2^205288212 is an apocalyptic number.

It is an amenable number.

205288212 is an abundant number, since it is smaller than the sum of its proper divisors (274872588).

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

205288212 is a wasteful number, since it uses less digits than its factorization.

205288212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41255 (or 41253 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 205288212 is about 14327.8823278250. The cubic root of 205288212 is about 589.9130504827.

The spelling of 205288212 in words is "two hundred five million, two hundred eighty-eight thousand, two hundred twelve".