205066040 has 16 divisors (see below), whose sum is σ = 461398680. Its totient is φ = 82026400.

The previous prime is 205066039. The next prime is 205066049. The reversal of 205066040 is 40660502.

It is a super-2 number, since 2×205066040² = 84104161522563200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205065997 and 205066015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205066049) by changing a digit.

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, 2563286 + ... + 2563365.

Almost surely, 2^205066040 is an apocalyptic number.

205066040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205066040 is an abundant number, since it is smaller than the sum of its proper divisors (256332640).

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

205066040 is a wasteful number, since it uses less digits than its factorization.

205066040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126662 (or 5126658 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 205066040 is about 14320.1270944081. The cubic root of 205066040 is about 589.7001636510.

The spelling of 205066040 in words is "two hundred five million, sixty-six thousand, forty".