128032411 has 4 divisors (see below), whose sum is σ = 137881072. Its totient is φ = 118183752.

The previous prime is 128032409. The next prime is 128032417. The reversal of 128032411 is 114230821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128032411 - 2¹ = 128032409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128032417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4924311 + ... + 4924336.

It is an arithmetic number, because the mean of its divisors is an integer number (34470268).

Almost surely, 2^128032411 is an apocalyptic number.

128032411 is a deficient number, since it is larger than the sum of its proper divisors (9848661).

128032411 is an equidigital number, since it uses as much as digits as its factorization.

128032411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9848660.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 128032411 is about 11315.1407856906. The cubic root of 128032411 is about 504.0109531402.

The spelling of 128032411 in words is "one hundred twenty-eight million, thirty-two thousand, four hundred eleven".