206075538 has 48 divisors (see below), whose sum is σ = 480969216. Its totient is φ = 63581760.

The previous prime is 206075503. The next prime is 206075543. The reversal of 206075538 is 835570602.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4806 + ... + 20862.

It is an arithmetic number, because the mean of its divisors is an integer number (10020192).

Almost surely, 2^206075538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206075538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240484608).

206075538 is an abundant number, since it is smaller than the sum of its proper divisors (274893678).

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

206075538 is a wasteful number, since it uses less digits than its factorization.

206075538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16119 (or 16116 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 206075538 is about 14355.3313441383. The cubic root of 206075538 is about 590.6662377187. Note that the first 3 decimals are identical.

The spelling of 206075538 in words is "two hundred six million, seventy-five thousand, five hundred thirty-eight".