206384240 has 20 divisors (see below), whose sum is σ = 479843544. Its totient is φ = 82553664.

The previous prime is 206384239. The next prime is 206384273. The reversal of 206384240 is 42483602.

It is a tau number, because it is divible by the number of its divisors (20).

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, 1289822 + ... + 1289981.

Almost surely, 2^206384240 is an apocalyptic number.

206384240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206384240 is an abundant number, since it is smaller than the sum of its proper divisors (273459304).

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

206384240 is a wasteful number, since it uses less digits than its factorization.

206384240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579816 (or 2579810 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 206384240 is about 14366.0794930280. The cubic root of 206384240 is about 590.9610307151.

The spelling of 206384240 in words is "two hundred six million, three hundred eighty-four thousand, two hundred forty".