205428908 has 6 divisors (see below), whose sum is σ = 359500596. Its totient is φ = 102714452.

The previous prime is 205428887. The next prime is 205428929. The reversal of 205428908 is 809824502.

205428908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (205428887) and next prime (205428929).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25678610 + ... + 25678617.

It is an arithmetic number, because the mean of its divisors is an integer number (59916766).

Almost surely, 2^205428908 is an apocalyptic number.

It is an amenable number.

205428908 is a deficient number, since it is larger than the sum of its proper divisors (154071688).

205428908 is a wasteful number, since it uses less digits than its factorization.

205428908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51357231 (or 51357229 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 205428908 is about 14332.7913540943. The cubic root of 205428908 is about 590.0477869941.

The spelling of 205428908 in words is "two hundred five million, four hundred twenty-eight thousand, nine hundred eight".