205616442 has 32 divisors (see below), whose sum is σ = 434790720. Its totient is φ = 64644480.

The previous prime is 205616441. The next prime is 205616449. The reversal of 205616442 is 244616502.

It is not an unprimeable number, because it can be changed into a prime (205616441) 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 15 ways as a sum of consecutive naturals, for example, 22692 + ... + 30432.

It is an arithmetic number, because the mean of its divisors is an integer number (13587210).

Almost surely, 2^205616442 is an apocalyptic number.

205616442 is an abundant number, since it is smaller than the sum of its proper divisors (229174278).

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

205616442 is a wasteful number, since it uses less digits than its factorization.

205616442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7998.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 205616442 is about 14339.3319928091. The cubic root of 205616442 is about 590.2272819642.

The spelling of 205616442 in words is "two hundred five million, six hundred sixteen thousand, four hundred forty-two".