206440026 has 32 divisors (see below), whose sum is σ = 450914688. Its totient is φ = 62623680.

The previous prime is 206440021. The next prime is 206440037. The reversal of 206440026 is 620044602.

It is a junction number, because it is equal to n+sod(n) for n = 206439978 and 206440005.

It is not an unprimeable number, because it can be changed into a prime (206440021) 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, 13101 + ... + 24176.

It is an arithmetic number, because the mean of its divisors is an integer number (14091084).

Almost surely, 2^206440026 is an apocalyptic number.

206440026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

206440026 is an abundant number, since it is smaller than the sum of its proper divisors (244474662).

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

206440026 is a wasteful number, since it uses less digits than its factorization.

206440026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37366.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 206440026 is about 14368.0209493166. The cubic root of 206440026 is about 591.0142718316.

Adding to 206440026 its reverse (620044602), we get a palindrome (826484628).

The spelling of 206440026 in words is "two hundred six million, four hundred forty thousand, twenty-six".