205452012 has 12 divisors (see below), whose sum is σ = 479388056. Its totient is φ = 68484000.

The previous prime is 205452011. The next prime is 205452017. The reversal of 205452012 is 210254502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 205452012.

It is not an unprimeable number, because it can be changed into a prime (205452011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8560489 + ... + 8560512.

Almost surely, 2^205452012 is an apocalyptic number.

It is an amenable number.

205452012 is an abundant number, since it is smaller than the sum of its proper divisors (273936044).

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

205452012 is a wasteful number, since it uses less digits than its factorization.

205452012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17121008 (or 17121006 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 205452012 is about 14333.5973153985. The cubic root of 205452012 is about 590.0699064922.

The spelling of 205452012 in words is "two hundred five million, four hundred fifty-two thousand, twelve".