205390004 has 24 divisors (see below), whose sum is σ = 371616000. Its totient is φ = 99224640.

The previous prime is 205390001. The next prime is 205390013. The reversal of 205390004 is 400093502.

205390004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205390001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129287 + ... + 130865.

It is an arithmetic number, because the mean of its divisors is an integer number (15484000).

Almost surely, 2^205390004 is an apocalyptic number.

It is an amenable number.

205390004 is a deficient number, since it is larger than the sum of its proper divisors (166225996).

205390004 is a wasteful number, since it uses less digits than its factorization.

205390004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 205390004 is about 14331.4341222363. The cubic root of 205390004 is about 590.0105370138.

The spelling of 205390004 in words is "two hundred five million, three hundred ninety thousand, four".