206628 has 24 divisors (see below), whose sum is σ = 491232. Its totient is φ = 67584.

The previous prime is 206627. The next prime is 206639. The reversal of 206628 is 826602.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 206598 and 206607.

It is not an unprimeable number, because it can be changed into a prime (206623) 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, 676 + ... + 932.

It is an arithmetic number, because the mean of its divisors is an integer number (20468).

2²⁰⁶⁶²⁸ is an apocalyptic number.

It is an amenable number.

206628 is an abundant number, since it is smaller than the sum of its proper divisors (284604).

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

206628 is a wasteful number, since it uses less digits than its factorization.

206628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 206628 is about 454.5635269135. The cubic root of 206628 is about 59.1193600128.

The spelling of 206628 in words is "two hundred six thousand, six hundred twenty-eight".