206504128 has 28 divisors (see below), whose sum is σ = 423915840. Its totient is φ = 99690752.

The previous prime is 206504107. The next prime is 206504149. The reversal of 206504128 is 821405602.

It is an interprime number because it is at equal distance from previous prime (206504107) and next prime (206504149).

It is a junction number, because it is equal to n+sod(n) for n = 206504096 and 206504105.

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, 53776 + ... + 57487.

Almost surely, 2^206504128 is an apocalyptic number.

It is an amenable number.

206504128 is an abundant number, since it is smaller than the sum of its proper divisors (217411712).

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

206504128 is a wasteful number, since it uses less digits than its factorization.

206504128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111304 (or 111294 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 206504128 is about 14370.2514939718. The cubic root of 206504128 is about 591.0754377418.

The spelling of 206504128 in words is "two hundred six million, five hundred four thousand, one hundred twenty-eight".