206128736 has 24 divisors (see below), whose sum is σ = 442709064. Its totient is φ = 93694720.

The previous prime is 206128733. The next prime is 206128751. The reversal of 206128736 is 637821602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 206128696 and 206128705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206128733) 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, 292445 + ... + 293148.

It is an arithmetic number, because the mean of its divisors is an integer number (18446211).

Almost surely, 2^206128736 is an apocalyptic number.

It is an amenable number.

206128736 is an abundant number, since it is smaller than the sum of its proper divisors (236580328).

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

206128736 is a wasteful number, since it uses less digits than its factorization.

206128736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585614 (or 585606 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 206128736 is about 14357.1841250295. The cubic root of 206128736 is about 590.7170597932.

The spelling of 206128736 in words is "two hundred six million, one hundred twenty-eight thousand, seven hundred thirty-six".