206634430 has 16 divisors (see below), whose sum is σ = 372269520. Its totient is φ = 82580992.

The previous prime is 206634427. The next prime is 206634433. The reversal of 206634430 is 34436602.

It is an interprime number because it is at equal distance from previous prime (206634427) and next prime (206634433).

It is a super-2 number, since 2×206634430² = 85395575322849800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206634433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3681 + ... + 20659.

It is an arithmetic number, because the mean of its divisors is an integer number (23266845).

Almost surely, 2^206634430 is an apocalyptic number.

206634430 is a deficient number, since it is larger than the sum of its proper divisors (165635090).

206634430 is a wasteful number, since it uses less digits than its factorization.

206634430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18203.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 206634430 is about 14374.7845201241. The cubic root of 206634430 is about 591.1997324615.

The spelling of 206634430 in words is "two hundred six million, six hundred thirty-four thousand, four hundred thirty".