205020228 has 48 divisors (see below), whose sum is σ = 547742720. Its totient is φ = 58467744.

The previous prime is 205020223. The next prime is 205020269. The reversal of 205020228 is 822020502.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (205020223) 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 in 15 ways as a sum of consecutive naturals, for example, 50025 + ... + 53967.

Almost surely, 2^205020228 is an apocalyptic number.

205020228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

205020228 is an abundant number, since it is smaller than the sum of its proper divisors (342722492).

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

205020228 is a wasteful number, since it uses less digits than its factorization.

205020228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576 (or 4574 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 205020228 is about 14318.5274382529. The cubic root of 205020228 is about 589.6562471385.

The spelling of 205020228 in words is "two hundred five million, twenty thousand, two hundred twenty-eight".