205102028 has 12 divisors (see below), whose sum is σ = 359245320. Its totient is φ = 102460512.

The previous prime is 205102021. The next prime is 205102067. The reversal of 205102028 is 820201502.

It is a super-3 number, since 3×205102028³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (205102021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17393 + ... + 26696.

It is an arithmetic number, because the mean of its divisors is an integer number (29937110).

Almost surely, 2^205102028 is an apocalyptic number.

It is an amenable number.

205102028 is a deficient number, since it is larger than the sum of its proper divisors (154143292).

205102028 is a wasteful number, since it uses less digits than its factorization.

205102028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45256 (or 45254 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 205102028 is about 14321.3835923768. The cubic root of 205102028 is about 589.7346580479.

The spelling of 205102028 in words is "two hundred five million, one hundred two thousand, twenty-eight".