205219030 has 16 divisors (see below), whose sum is σ = 369865440. Its totient is φ = 81982912.

The previous prime is 205219009. The next prime is 205219031. The reversal of 205219030 is 30912502.

It is a super-2 number, since 2×205219030² = 84229700548281800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205218992 and 205219010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205219031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4594 + ... + 20773.

It is an arithmetic number, because the mean of its divisors is an integer number (23116590).

Almost surely, 2^205219030 is an apocalyptic number.

205219030 is a deficient number, since it is larger than the sum of its proper divisors (164646410).

205219030 is a wasteful number, since it uses less digits than its factorization.

205219030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26183.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 205219030 is about 14325.4678806662. The cubic root of 205219030 is about 589.8467762601.

The spelling of 205219030 in words is "two hundred five million, two hundred nineteen thousand, thirty".