206839140 has 24 divisors (see below), whose sum is σ = 579149760. Its totient is φ = 55157088.

The previous prime is 206839123. The next prime is 206839177. The reversal of 206839140 is 41938602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723600 + ... + 1723719.

It is an arithmetic number, because the mean of its divisors is an integer number (24131240).

Almost surely, 2^206839140 is an apocalyptic number.

206839140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206839140 is an abundant number, since it is smaller than the sum of its proper divisors (372310620).

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

206839140 is a wasteful number, since it uses less digits than its factorization.

206839140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447331 (or 3447329 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 206839140 is about 14381.9032120231. The cubic root of 206839140 is about 591.3948992809.

The spelling of 206839140 in words is "two hundred six million, eight hundred thirty-nine thousand, one hundred forty".