128329011 has 24 divisors (see below), whose sum is σ = 188866080. Its totient is φ = 83952000.

The previous prime is 128328997. The next prime is 128329037. The reversal of 128329011 is 110923821.

It is not a de Polignac number, because 128329011 - 2⁶ = 128328947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128329051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120421 + ... + 121481.

It is an arithmetic number, because the mean of its divisors is an integer number (7869420).

Almost surely, 2^128329011 is an apocalyptic number.

128329011 is a deficient number, since it is larger than the sum of its proper divisors (60537069).

128329011 is a wasteful number, since it uses less digits than its factorization.

128329011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 128329011 is about 11328.2395366623. The cubic root of 128329011 is about 504.3998503992.

The spelling of 128329011 in words is "one hundred twenty-eight million, three hundred twenty-nine thousand, eleven".