205466020 has 12 divisors (see below), whose sum is σ = 431478684. Its totient is φ = 82186400.

The previous prime is 205466011. The next prime is 205466021. The reversal of 205466020 is 20664502.

205466020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24186724 + 181279296 = 4918^2 + 13464^2 .

It is not an unprimeable number, because it can be changed into a prime (205466021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5136631 + ... + 5136670.

It is an arithmetic number, because the mean of its divisors is an integer number (35956557).

Almost surely, 2^205466020 is an apocalyptic number.

205466020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205466020 is an abundant number, since it is smaller than the sum of its proper divisors (226012664).

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

205466020 is a wasteful number, since it uses less digits than its factorization.

205466020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273310 (or 10273308 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 205466020 is about 14334.0859492330. The cubic root of 205466020 is about 590.0833167793.

The spelling of 205466020 in words is "two hundred five million, four hundred sixty-six thousand, twenty".