206440788 has 24 divisors (see below), whose sum is σ = 488295808. Its totient is φ = 67870656.

The previous prime is 206440783. The next prime is 206440849. The reversal of 206440788 is 887044602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206440783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116956 + ... + 118707.

Almost surely, 2^206440788 is an apocalyptic number.

It is an amenable number.

206440788 is an abundant number, since it is smaller than the sum of its proper divisors (281855020).

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

206440788 is a wasteful number, since it uses less digits than its factorization.

206440788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235743 (or 235741 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 206440788 is about 14368.0474665140. The cubic root of 206440788 is about 591.0149990038.

The spelling of 206440788 in words is "two hundred six million, four hundred forty thousand, seven hundred eighty-eight".