206400346 has 16 divisors (see below), whose sum is σ = 314863488. Its totient is φ = 101455200.

The previous prime is 206400343. The next prime is 206400347. The reversal of 206400346 is 643004602.

It is a super-2 number, since 2×206400346² = 85202205657839432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206400346.

It is not an unprimeable number, because it can be changed into a prime (206400343) 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, 46191 + ... + 50461.

It is an arithmetic number, because the mean of its divisors is an integer number (19678968).

Almost surely, 2^206400346 is an apocalyptic number.

206400346 is a deficient number, since it is larger than the sum of its proper divisors (108463142).

206400346 is a wasteful number, since it uses less digits than its factorization.

206400346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 206400346 is about 14366.6400386451. The cubic root of 206400346 is about 590.9764029657.

Adding to 206400346 its reverse (643004602), we get a palindrome (849404948).

The spelling of 206400346 in words is "two hundred six million, four hundred thousand, three hundred forty-six".