205428003 has 16 divisors (see below), whose sum is σ = 299362176. Its totient is φ = 124269440.

The previous prime is 205428001. The next prime is 205428061. The reversal of 205428003 is 300824502.

205428003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 205428003 - 2¹ = 205428001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205428001) 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, 13051 + ... + 24107.

It is an arithmetic number, because the mean of its divisors is an integer number (18710136).

Almost surely, 2^205428003 is an apocalyptic number.

205428003 is a deficient number, since it is larger than the sum of its proper divisors (93934173).

205428003 is a wasteful number, since it uses less digits than its factorization.

205428003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11634.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 205428003 is about 14332.7597830983. The cubic root of 205428003 is about 590.0469205240.

The spelling of 205428003 in words is "two hundred five million, four hundred twenty-eight thousand, three".