206888380 has 12 divisors (see below), whose sum is σ = 434465640. Its totient is φ = 82755344.

The previous prime is 206888369. The next prime is 206888399. The reversal of 206888380 is 83888602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5172190 + ... + 5172229.

It is an arithmetic number, because the mean of its divisors is an integer number (36205470).

Almost surely, 2^206888380 is an apocalyptic number.

206888380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206888380 is an abundant number, since it is smaller than the sum of its proper divisors (227577260).

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

206888380 is a wasteful number, since it uses less digits than its factorization.

206888380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344428 (or 10344426 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 206888380 is about 14383.6149837237. The cubic root of 206888380 is about 591.4418245942.

The spelling of 206888380 in words is "two hundred six million, eight hundred eighty-eight thousand, three hundred eighty".