206423330 has 32 divisors (see below), whose sum is σ = 378877824. Its totient is φ = 80960256.

The previous prime is 206423323. The next prime is 206423339. The reversal of 206423330 is 33324602.

It is a super-2 number, since 2×206423330² = 85221182336577800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206423296 and 206423305.

It is not an unprimeable number, because it can be changed into a prime (206423339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109274 + ... + 111146.

It is an arithmetic number, because the mean of its divisors is an integer number (11839932).

Almost surely, 2^206423330 is an apocalyptic number.

206423330 is a deficient number, since it is larger than the sum of its proper divisors (172454494).

206423330 is a wasteful number, since it uses less digits than its factorization.

206423330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 206423330 is about 14367.4399250528. The cubic root of 206423330 is about 590.9983384869.

Adding to 206423330 its reverse (33324602), we get a palindrome (239747932).

The spelling of 206423330 in words is "two hundred six million, four hundred twenty-three thousand, three hundred thirty".