205074506 has 24 divisors (see below), whose sum is σ = 385362180. Its totient is φ = 81127872.

The previous prime is 205074481. The next prime is 205074521. The reversal of 205074506 is 605470502.

It can be written as a sum of positive squares in 2 ways, for example, as 179318881 + 25755625 = 13391^2 + 5075^2 .

It is a super-2 number, since 2×205074506² = 84111106022288072, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 79211 + ... + 81758.

Almost surely, 2^205074506 is an apocalyptic number.

205074506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

205074506 is a deficient number, since it is larger than the sum of its proper divisors (180287674).

205074506 is a wasteful number, since it uses less digits than its factorization.

205074506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160998 (or 160991 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 205074506 is about 14320.4226892924. The cubic root of 205074506 is about 589.7082786512.

The spelling of 205074506 in words is "two hundred five million, seventy-four thousand, five hundred six".