205079128 has 8 divisors (see below), whose sum is σ = 384523380. Its totient is φ = 102539560.

The previous prime is 205079117. The next prime is 205079153. The reversal of 205079128 is 821970502.

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

It is a junction number, because it is equal to n+sod(n) for n = 205079093 and 205079102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12817438 + ... + 12817453.

Almost surely, 2^205079128 is an apocalyptic number.

It is an amenable number.

205079128 is a deficient number, since it is larger than the sum of its proper divisors (179444252).

205079128 is a wasteful number, since it uses less digits than its factorization.

205079128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25634897 (or 25634893 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 205079128 is about 14320.5840663012. The cubic root of 205079128 is about 589.7127089291.

The spelling of 205079128 in words is "two hundred five million, seventy-nine thousand, one hundred twenty-eight".