206534040 has 64 divisors (see below), whose sum is σ = 623462400. Its totient is φ = 54732672.

The previous prime is 206534033. The next prime is 206534051. The reversal of 206534040 is 40435602.

206534040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 206534040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14281 + ... + 24839.

It is an arithmetic number, because the mean of its divisors is an integer number (9741600).

Almost surely, 2^206534040 is an apocalyptic number.

206534040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206534040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311731200).

206534040 is an abundant number, since it is smaller than the sum of its proper divisors (416928360).

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

206534040 is a wasteful number, since it uses less digits than its factorization.

206534040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10736 (or 10732 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 206534040 is about 14371.2922174730. The cubic root of 206534040 is about 591.1039753391.

Adding to 206534040 its reverse (40435602), we get a palindrome (246969642).

The spelling of 206534040 in words is "two hundred six million, five hundred thirty-four thousand, forty".