205410872 has 8 divisors (see below), whose sum is σ = 385145400. Its totient is φ = 102705432.

The previous prime is 205410869. The next prime is 205410889. The reversal of 205410872 is 278014502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12838172 + ... + 12838187.

It is an arithmetic number, because the mean of its divisors is an integer number (48143175).

Almost surely, 2^205410872 is an apocalyptic number.

It is an amenable number.

205410872 is a deficient number, since it is larger than the sum of its proper divisors (179734528).

205410872 is a wasteful number, since it uses less digits than its factorization.

205410872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25676365 (or 25676361 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 205410872 is about 14332.1621537017. The cubic root of 205410872 is about 590.0305183869.

The spelling of 205410872 in words is "two hundred five million, four hundred ten thousand, eight hundred seventy-two".