206940872 has 16 divisors (see below), whose sum is σ = 400531200. Its totient is φ = 100132560.

The previous prime is 206940871. The next prime is 206940941. The reversal of 206940872 is 278049602.

It is a super-3 number, since 3×206940872³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (206940871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416972 + ... + 417467.

It is an arithmetic number, because the mean of its divisors is an integer number (25033200).

Almost surely, 2^206940872 is an apocalyptic number.

It is an amenable number.

206940872 is a deficient number, since it is larger than the sum of its proper divisors (193590328).

206940872 is a wasteful number, since it uses less digits than its factorization.

206940872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834476 (or 834472 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 206940872 is about 14385.4395831341. The cubic root of 206940872 is about 591.4918408380.

The spelling of 206940872 in words is "two hundred six million, nine hundred forty thousand, eight hundred seventy-two".