206891484 has 12 divisors (see below), whose sum is σ = 482746824. Its totient is φ = 68963824.

The previous prime is 206891473. The next prime is 206891491. The reversal of 206891484 is 484198602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8620467 + ... + 8620490.

It is an arithmetic number, because the mean of its divisors is an integer number (40228902).

Almost surely, 2^206891484 is an apocalyptic number.

It is an amenable number.

206891484 is an abundant number, since it is smaller than the sum of its proper divisors (275855340).

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

206891484 is a wasteful number, since it uses less digits than its factorization.

206891484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17240964 (or 17240962 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 206891484 is about 14383.7228838712. The cubic root of 206891484 is about 591.4447824311. Note that the first 3 decimals are identical.

The spelling of 206891484 in words is "two hundred six million, eight hundred ninety-one thousand, four hundred eighty-four".