206672320 has 28 divisors (see below), whose sum is σ = 492139224. Its totient is φ = 82668800.

The previous prime is 206672311. The next prime is 206672321. The reversal of 206672320 is 23276602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206672321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322606 + ... + 323245.

Almost surely, 2^206672320 is an apocalyptic number.

206672320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206672320 is an abundant number, since it is smaller than the sum of its proper divisors (285466904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206672320 is an equidigital number, since it uses as much as digits as its factorization.

206672320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645868 (or 645858 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 206672320 is about 14376.1023925124. The cubic root of 206672320 is about 591.2358658216.

The spelling of 206672320 in words is "two hundred six million, six hundred seventy-two thousand, three hundred twenty".