206656120 has 32 divisors (see below), whose sum is σ = 507247920. Its totient is φ = 75147520.

The previous prime is 206656057. The next prime is 206656159. The reversal of 206656120 is 21656602.

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, 234397 + ... + 235276.

Almost surely, 2^206656120 is an apocalyptic number.

206656120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206656120 is an abundant number, since it is smaller than the sum of its proper divisors (300591800).

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

206656120 is a wasteful number, since it uses less digits than its factorization.

206656120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469695 (or 469691 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 206656120 is about 14375.5389464187. The cubic root of 206656120 is about 591.2204174195.

The spelling of 206656120 in words is "two hundred six million, six hundred fifty-six thousand, one hundred twenty".