206873390 has 8 divisors (see below), whose sum is σ = 372372120. Its totient is φ = 82749352.

The previous prime is 206873383. The next prime is 206873393. The reversal of 206873390 is 93378602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206873393) 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, 10343660 + ... + 10343679.

It is an arithmetic number, because the mean of its divisors is an integer number (46546515).

Almost surely, 2^206873390 is an apocalyptic number.

206873390 is a deficient number, since it is larger than the sum of its proper divisors (165498730).

206873390 is a wasteful number, since it uses less digits than its factorization.

206873390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20687346.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 206873390 is about 14383.0938952647. The cubic root of 206873390 is about 591.4275400364.

The spelling of 206873390 in words is "two hundred six million, eight hundred seventy-three thousand, three hundred ninety".