205056156 has 12 divisors (see below), whose sum is σ = 478464392. Its totient is φ = 68352048.

The previous prime is 205056143. The next prime is 205056169. The reversal of 205056156 is 651650502.

It is an interprime number because it is at equal distance from previous prime (205056143) and next prime (205056169).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×205056156² = 84096054226992672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8543995 + ... + 8544018.

Almost surely, 2^205056156 is an apocalyptic number.

It is an amenable number.

205056156 is an abundant number, since it is smaller than the sum of its proper divisors (273408236).

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

205056156 is a wasteful number, since it uses less digits than its factorization.

205056156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17088020 (or 17088018 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 205056156 is about 14319.7819815806. The cubic root of 205056156 is about 589.6906891583.

The spelling of 205056156 in words is "two hundred five million, fifty-six thousand, one hundred fifty-six".