205445006 has 16 divisors (see below), whose sum is σ = 333205488. Its totient is φ = 94440000.

The previous prime is 205444991. The next prime is 205445027. The reversal of 205445006 is 600544502.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9215 + ... + 22266.

It is an arithmetic number, because the mean of its divisors is an integer number (20825343).

Almost surely, 2^205445006 is an apocalyptic number.

205445006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

205445006 is a deficient number, since it is larger than the sum of its proper divisors (127760482).

205445006 is a wasteful number, since it uses less digits than its factorization.

205445006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31747.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 205445006 is about 14333.3529224672. The cubic root of 205445006 is about 590.0631992053.

Adding to 205445006 its reverse (600544502), we get a palindrome (805989508).

The spelling of 205445006 in words is "two hundred five million, four hundred forty-five thousand, six".