205083740 has 24 divisors (see below), whose sum is σ = 431721360. Its totient is φ = 81834368.

The previous prime is 205083731. The next prime is 205083743. The reversal of 205083740 is 47380502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205083743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3857 + ... + 20616.

It is an arithmetic number, because the mean of its divisors is an integer number (17988390).

Almost surely, 2^205083740 is an apocalyptic number.

205083740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205083740 is an abundant number, since it is smaller than the sum of its proper divisors (226637620).

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

205083740 is a wasteful number, since it uses less digits than its factorization.

205083740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24901 (or 24899 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 205083740 is about 14320.7450923477. The cubic root of 205083740 is about 589.7171295556.

The spelling of 205083740 in words is "two hundred five million, eighty-three thousand, seven hundred forty".