210128768 has 16 divisors (see below), whose sum is σ = 418616160. Its totient is φ = 105064320.

The previous prime is 210128767. The next prime is 210128773. The reversal of 210128768 is 867821012.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210128761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820688 + ... + 820943.

It is an arithmetic number, because the mean of its divisors is an integer number (26163510).

Almost surely, 2^210128768 is an apocalyptic number.

It is an amenable number.

210128768 is a deficient number, since it is larger than the sum of its proper divisors (208487392).

210128768 is an equidigital number, since it uses as much as digits as its factorization.

210128768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641645 (or 1641633 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 210128768 is about 14495.8189834173. The cubic root of 210128768 is about 594.5136604438.

The spelling of 210128768 in words is "two hundred ten million, one hundred twenty-eight thousand, seven hundred sixty-eight".