206732140 has 24 divisors (see below), whose sum is σ = 434810880. Its totient is φ = 82564608.

The previous prime is 206732129. The next prime is 206732147. The reversal of 206732140 is 41237602.

It is not an unprimeable number, because it can be changed into a prime (206732147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5781 + ... + 21139.

It is an arithmetic number, because the mean of its divisors is an integer number (18117120).

Almost surely, 2^206732140 is an apocalyptic number.

206732140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206732140 is an abundant number, since it is smaller than the sum of its proper divisors (228078740).

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

206732140 is a wasteful number, since it uses less digits than its factorization.

206732140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16041 (or 16039 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 206732140 is about 14378.1827780843. The cubic root of 206732140 is about 591.2929034835.

Adding to 206732140 its reverse (41237602), we get a palindrome (247969742).

The spelling of 206732140 in words is "two hundred six million, seven hundred thirty-two thousand, one hundred forty".