128238411 has 32 divisors (see below), whose sum is σ = 202206208. Its totient is φ = 70761600.

The previous prime is 128238401. The next prime is 128238421. The reversal of 128238411 is 114832821.

It is an interprime number because it is at equal distance from previous prime (128238401) and next prime (128238421).

It is not a de Polignac number, because 128238411 - 2⁵ = 128238379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128238401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116781 + ... + 117873.

It is an arithmetic number, because the mean of its divisors is an integer number (6318944).

Almost surely, 2^128238411 is an apocalyptic number.

128238411 is a deficient number, since it is larger than the sum of its proper divisors (73967797).

128238411 is a wasteful number, since it uses less digits than its factorization.

128238411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its digits is 3072, while the sum is 30.

The square root of 128238411 is about 11324.2399744972. The cubic root of 128238411 is about 504.2811207249.

It can be divided in two parts, 1282 and 38411, that added together give a palindrome (39693).

The spelling of 128238411 in words is "one hundred twenty-eight million, two hundred thirty-eight thousand, four hundred eleven".