206440016 has 60 divisors (see below), whose sum is σ = 427463712. Its totient is φ = 96558912.

The previous prime is 206439977. The next prime is 206440021. The reversal of 206440016 is 610044602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 206439973 and 206440000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 594755 + ... + 595101.

Almost surely, 2^206440016 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 206440016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213731856).

206440016 is an abundant number, since it is smaller than the sum of its proper divisors (221023696).

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

206440016 is a wasteful number, since it uses less digits than its factorization.

206440016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 206440016 is about 14368.0206013215. The cubic root of 206440016 is about 591.0142622887.

Adding to 206440016 its reverse (610044602), we get a palindrome (816484618).

The spelling of 206440016 in words is "two hundred six million, four hundred forty thousand, sixteen".