206404330 has 16 divisors (see below), whose sum is σ = 405303264. Its totient is φ = 75056080.

The previous prime is 206404301. The next prime is 206404333. The reversal of 206404330 is 33404602.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (206404333) 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, 938092 + ... + 938311.

It is an arithmetic number, because the mean of its divisors is an integer number (25331454).

Almost surely, 2^206404330 is an apocalyptic number.

206404330 is a deficient number, since it is larger than the sum of its proper divisors (198898934).

206404330 is a wasteful number, since it uses less digits than its factorization.

206404330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876421.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 206404330 is about 14366.7786925253. The cubic root of 206404330 is about 590.9802053412.

Adding to 206404330 its reverse (33404602), we get a palindrome (239808932).

The spelling of 206404330 in words is "two hundred six million, four hundred four thousand, three hundred thirty".