206489856 has 72 divisors (see below), whose sum is σ = 551961760. Its totient is φ = 68530176.

The previous prime is 206489839. The next prime is 206489861. The reversal of 206489856 is 658984602.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 239955 + ... + 240813.

Almost surely, 2^206489856 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 206489856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275980880).

206489856 is an abundant number, since it is smaller than the sum of its proper divisors (345471904).

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

206489856 is an equidigital number, since it uses as much as digits as its factorization.

206489856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 206489856 is about 14369.7549039641. The cubic root of 206489856 is about 591.0618205435.

The spelling of 206489856 in words is "two hundred six million, four hundred eighty-nine thousand, eight hundred fifty-six".