205066280 has 16 divisors (see below), whose sum is σ = 461399220. Its totient is φ = 82026496.

The previous prime is 205066273. The next prime is 205066307. The reversal of 205066280 is 82660502.

It can be written as a sum of positive squares in 2 ways, for example, as 186213316 + 18852964 = 13646^2 + 4342^2 .

It is a super-4 number, since 4×205066280⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563289 + ... + 2563368.

Almost surely, 2^205066280 is an apocalyptic number.

205066280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205066280 is an abundant number, since it is smaller than the sum of its proper divisors (256332940).

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

205066280 is a wasteful number, since it uses less digits than its factorization.

205066280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126668 (or 5126664 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 205066280 is about 14320.1354742195. The cubic root of 205066280 is about 589.7003937037.

The spelling of 205066280 in words is "two hundred five million, sixty-six thousand, two hundred eighty".