206801056 has 96 divisors (see below), whose sum is σ = 537570432. Its totient is φ = 75816960.

The previous prime is 206801053. The next prime is 206801087. The reversal of 206801056 is 650108602.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (206801053) 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, 39420 + ... + 44356.

It is an arithmetic number, because the mean of its divisors is an integer number (5599692).

Almost surely, 2^206801056 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 206801056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268785216).

206801056 is an abundant number, since it is smaller than the sum of its proper divisors (330769376).

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

206801056 is a wasteful number, since it uses less digits than its factorization.

206801056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 206801056 is about 14380.5791260297. The cubic root of 206801056 is about 591.3586004356.

Adding to 206801056 its reverse (650108602), we get a palindrome (856909658).

It can be divided in two parts, 20680 and 1056, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 206801056 in words is "two hundred six million, eight hundred one thousand, fifty-six".