205279030 has 32 divisors (see below), whose sum is σ = 409714848. Its totient is φ = 73420800.

The previous prime is 205278973. The next prime is 205279037. The reversal of 205279030 is 30972502.

It is a self number, because there is not a number n which added to its sum of digits gives 205279030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205279037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8587 + ... + 22006.

It is an arithmetic number, because the mean of its divisors is an integer number (12803589).

Almost surely, 2^205279030 is an apocalyptic number.

205279030 is a deficient number, since it is larger than the sum of its proper divisors (204435818).

205279030 is a wasteful number, since it uses less digits than its factorization.

205279030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30672.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 205279030 is about 14327.5619000582. The cubic root of 205279030 is about 589.9042552669.

The spelling of 205279030 in words is "two hundred five million, two hundred seventy-nine thousand, thirty".