205395912 has 60 divisors (see below), whose sum is σ = 576322395. Its totient is φ = 68343696.

The previous prime is 205395901. The next prime is 205395929. The reversal of 205395912 is 219593502.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

205395912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 102697956 + 102697956 = 10134^2 + 10134^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10134.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 364543 + ... + 365105.

Almost surely, 2^205395912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205395912

205395912 is an abundant number, since it is smaller than the sum of its proper divisors (370926483).

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

205395912 is an frugal number, since it uses more digits than its factorization.

205395912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 205395912 is about 14331.6402410889. The cubic root of 205395912 is about 590.0161941356.

The spelling of 205395912 in words is "two hundred five million, three hundred ninety-five thousand, nine hundred twelve".