205128150 has 24 divisors (see below), whose sum is σ = 508718184. Its totient is φ = 54700800.

The previous prime is 205128127. The next prime is 205128169. The reversal of 205128150 is 51821502.

It is a self number, because there is not a number n which added to its sum of digits gives 205128150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683611 + ... + 683910.

It is an arithmetic number, because the mean of its divisors is an integer number (21196591).

Almost surely, 2^205128150 is an apocalyptic number.

205128150 is an abundant number, since it is smaller than the sum of its proper divisors (303590034).

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

205128150 is a wasteful number, since it uses less digits than its factorization.

205128150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367536 (or 1367531 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 205128150 is about 14322.2955562298. The cubic root of 205128150 is about 589.7596933843.

Adding to 205128150 its reverse (51821502), we get a palindrome (256949652).

The spelling of 205128150 in words is "two hundred five million, one hundred twenty-eight thousand, one hundred fifty".