206673280 has 128 divisors (see below), whose sum is σ = 556968960. Its totient is φ = 72652800.

The previous prime is 206673253. The next prime is 206673287. The reversal of 206673280 is 82376602.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206673287) 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, 217767 + ... + 218713.

It is an arithmetic number, because the mean of its divisors is an integer number (4351320).

Almost surely, 2^206673280 is an apocalyptic number.

206673280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206673280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278484480).

206673280 is an abundant number, since it is smaller than the sum of its proper divisors (350295680).

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

206673280 is a wasteful number, since it uses less digits than its factorization.

206673280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 206673280 is about 14376.1357812174. The cubic root of 206673280 is about 591.2367812571.

The spelling of 206673280 in words is "two hundred six million, six hundred seventy-three thousand, two hundred eighty".