205088530 has 8 divisors (see below), whose sum is σ = 369159372. Its totient is φ = 82035408.

The previous prime is 205088509. The next prime is 205088537. The reversal of 205088530 is 35880502.

It can be written as a sum of positive squares in 2 ways, for example, as 185259321 + 19829209 = 13611^2 + 4453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×205088530² = 84122610275121800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205088492 and 205088501.

It is not an unprimeable number, because it can be changed into a prime (205088537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10254417 + ... + 10254436.

Almost surely, 2^205088530 is an apocalyptic number.

205088530 is a deficient number, since it is larger than the sum of its proper divisors (164070842).

205088530 is a wasteful number, since it uses less digits than its factorization.

205088530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20508860.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 205088530 is about 14320.9123312728. The cubic root of 205088530 is about 589.7217207257.

The spelling of 205088530 in words is "two hundred five million, eighty-eight thousand, five hundred thirty".