206887408 has 120 divisors (see below), whose sum is σ = 512967168. Its totient is φ = 80091648.

The previous prime is 206887403. The next prime is 206887423. The reversal of 206887408 is 804788602.

206887408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206887403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 539985 + ... + 540367.

Almost surely, 2^206887408 is an apocalyptic number.

206887408 is a gapful number since it is divisible by the number (28) 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 206887408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256483584).

206887408 is an abundant number, since it is smaller than the sum of its proper divisors (306079760).

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

206887408 is a wasteful number, since it uses less digits than its factorization.

206887408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 206887408 is about 14383.5811952379. The cubic root of 206887408 is about 591.4408983583.

The spelling of 206887408 in words is "two hundred six million, eight hundred eighty-seven thousand, four hundred eight".