206449812 has 36 divisors (see below), whose sum is σ = 522505620. Its totient is φ = 68731392.

The previous prime is 206449807. The next prime is 206449813. The reversal of 206449812 is 218944602.

206449812 is a `hidden beast` number, since 2 + 0 + 644 + 9 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2702736 + 203747076 = 1644^2 + 14274^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206449813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30358 + ... + 36530.

It is an arithmetic number, because the mean of its divisors is an integer number (14514045).

Almost surely, 2^206449812 is an apocalyptic number.

It is an amenable number.

206449812 is an abundant number, since it is smaller than the sum of its proper divisors (316055808).

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

206449812 is a wasteful number, since it uses less digits than its factorization.

206449812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7112 (or 7107 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 206449812 is about 14368.3614932253. The cubic root of 206449812 is about 591.0236104184.

The spelling of 206449812 in words is "two hundred six million, four hundred forty-nine thousand, eight hundred twelve".