205000388 has 6 divisors (see below), whose sum is σ = 358750686. Its totient is φ = 102500192.

The previous prime is 205000381. The next prime is 205000457. The reversal of 205000388 is 883000502.

It can be written as a sum of positive squares in only one way, i.e., 180418624 + 24581764 = 13432^2 + 4958^2 .

It is not an unprimeable number, because it can be changed into a prime (205000381) by changing a digit.

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, 25625045 + ... + 25625052.

It is an arithmetic number, because the mean of its divisors is an integer number (59791781).

Almost surely, 2^205000388 is an apocalyptic number.

It is an amenable number.

205000388 is a deficient number, since it is larger than the sum of its proper divisors (153750298).

205000388 is a wasteful number, since it uses less digits than its factorization.

205000388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51250101 (or 51250099 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 205000388 is about 14317.8346128177. The cubic root of 205000388 is about 589.6372259953.

The spelling of 205000388 in words is "two hundred five million, three hundred eighty-eight", and thus it is an aban number.