205240530 has 32 divisors (see below), whose sum is σ = 537357888. Its totient is φ = 49755200.

The previous prime is 205240513. The next prime is 205240537. The reversal of 205240530 is 35042502.

It is a junction number, because it is equal to n+sod(n) for n = 205240497 and 205240506.

It is not an unprimeable number, because it can be changed into a prime (205240537) 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, 310641 + ... + 311300.

It is an arithmetic number, because the mean of its divisors is an integer number (16792434).

Almost surely, 2^205240530 is an apocalyptic number.

205240530 is an abundant number, since it is smaller than the sum of its proper divisors (332117358).

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

205240530 is a wasteful number, since it uses less digits than its factorization.

205240530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621962.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 205240530 is about 14326.2182728032. The cubic root of 205240530 is about 589.8673741920.

The spelling of 205240530 in words is "two hundred five million, two hundred forty thousand, five hundred thirty".