205045872 has 40 divisors (see below), whose sum is σ = 557583360. Its totient is φ = 64751040.

The previous prime is 205045871. The next prime is 205045889. The reversal of 205045872 is 278540502.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205045871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111504 + ... + 113327.

It is an arithmetic number, because the mean of its divisors is an integer number (13939584).

Almost surely, 2^205045872 is an apocalyptic number.

It is an amenable number.

205045872 is an abundant number, since it is smaller than the sum of its proper divisors (352537488).

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

205045872 is a wasteful number, since it uses less digits than its factorization.

205045872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224861 (or 224855 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 205045872 is about 14319.4228933990. The cubic root of 205045872 is about 589.6808309150.

The spelling of 205045872 in words is "two hundred five million, forty-five thousand, eight hundred seventy-two".