128320210 has 16 divisors (see below), whose sum is σ = 234763992. Its totient is φ = 50486400.

The previous prime is 128320207. The next prime is 128320219. The reversal of 128320210 is 12023821.

It can be written as a sum of positive squares in 4 ways, for example, as 84217329 + 44102881 = 9177^2 + 6641^2 .

It is not an unprimeable number, because it can be changed into a prime (128320219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104571 + ... + 105790.

Almost surely, 2^128320210 is an apocalyptic number.

128320210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128320210 is a deficient number, since it is larger than the sum of its proper divisors (106443782).

128320210 is a wasteful number, since it uses less digits than its factorization.

128320210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210429.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 128320210 is about 11327.8510759985. The cubic root of 128320210 is about 504.3883192976.

The spelling of 128320210 in words is "one hundred twenty-eight million, three hundred twenty thousand, two hundred ten".