206379728 has 40 divisors (see below), whose sum is σ = 427327560. Its totient is φ = 96215040.

The previous prime is 206379659. The next prime is 206379739. The reversal of 206379728 is 827973602.

It can be written as a sum of positive squares in 4 ways, for example, as 104611984 + 101767744 = 10228^2 + 10088^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26168 + ... + 33128.

It is an arithmetic number, because the mean of its divisors is an integer number (10683189).

Almost surely, 2^206379728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206379728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213663780).

206379728 is an abundant number, since it is smaller than the sum of its proper divisors (220947832).

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

206379728 is a wasteful number, since it uses less digits than its factorization.

206379728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095 (or 7089 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 206379728 is about 14365.9224555891. The cubic root of 206379728 is about 590.9567241272.

The spelling of 206379728 in words is "two hundred six million, three hundred seventy-nine thousand, seven hundred twenty-eight".