205684028 has 18 divisors (see below), whose sum is σ = 395645208. Its totient is φ = 93492520.

The previous prime is 205683983. The next prime is 205684033. The reversal of 205684028 is 820486502.

205684028 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212000 + ... + 212967.

Almost surely, 2^205684028 is an apocalyptic number.

It is an amenable number.

205684028 is a deficient number, since it is larger than the sum of its proper divisors (189961180).

205684028 is a wasteful number, since it uses less digits than its factorization.

205684028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424993 (or 424980 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 205684028 is about 14341.6884640547. The cubic root of 205684028 is about 590.2919439967.

The spelling of 205684028 in words is "two hundred five million, six hundred eighty-four thousand, twenty-eight".