128641196 has 24 divisors (see below), whose sum is σ = 232866816. Its totient is φ = 62116560.

The previous prime is 128641189. The next prime is 128641213. The reversal of 128641196 is 691146821.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 89435 + ... + 90861.

It is an arithmetic number, because the mean of its divisors is an integer number (9702784).

Almost surely, 2^128641196 is an apocalyptic number.

It is an amenable number.

128641196 is a deficient number, since it is larger than the sum of its proper divisors (104225620).

128641196 is a wasteful number, since it uses less digits than its factorization.

128641196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 128641196 is about 11342.0102274685. The cubic root of 128641196 is about 504.8085357243.

The spelling of 128641196 in words is "one hundred twenty-eight million, six hundred forty-one thousand, one hundred ninety-six".