205813628 has 24 divisors (see below), whose sum is σ = 388562832. Its totient is φ = 95024384.

The previous prime is 205813627. The next prime is 205813631. The reversal of 205813628 is 826318502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205813627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24950 + ... + 32157.

It is an arithmetic number, because the mean of its divisors is an integer number (16190118).

Almost surely, 2^205813628 is an apocalyptic number.

It is an amenable number.

205813628 is a deficient number, since it is larger than the sum of its proper divisors (182749204).

205813628 is a wasteful number, since it uses less digits than its factorization.

205813628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57181 (or 57179 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 205813628 is about 14346.2060489873. The cubic root of 205813628 is about 590.4158975102.

The spelling of 205813628 in words is "two hundred five million, eight hundred thirteen thousand, six hundred twenty-eight".