206445404 has 24 divisors (see below), whose sum is σ = 394545648. Its totient is φ = 93738240.

The previous prime is 206445397. The next prime is 206445413. The reversal of 206445404 is 404544602.

It is a happy number.

206445404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 52532 + ... + 56324.

It is an arithmetic number, because the mean of its divisors is an integer number (16439402).

Almost surely, 2^206445404 is an apocalyptic number.

It is an amenable number.

206445404 is a deficient number, since it is larger than the sum of its proper divisors (188100244).

206445404 is a wasteful number, since it uses less digits than its factorization.

206445404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045 (or 5043 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 206445404 is about 14368.2080998293. The cubic root of 206445404 is about 591.0194039875.

The spelling of 206445404 in words is "two hundred six million, four hundred forty-five thousand, four hundred four".