128272238 has 8 divisors (see below), whose sum is σ = 192457080. Its totient is φ = 64119880.

The previous prime is 128272217. The next prime is 128272247. The reversal of 128272238 is 832272821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 128272198 and 128272207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8828 + ... + 18288.

It is an arithmetic number, because the mean of its divisors is an integer number (24057135).

Almost surely, 2^128272238 is an apocalyptic number.

128272238 is a deficient number, since it is larger than the sum of its proper divisors (64184842).

128272238 is an equidigital number, since it uses as much as digits as its factorization.

128272238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16242.

The product of its digits is 21504, while the sum is 35.

The square root of 128272238 is about 11325.7334420337. The cubic root of 128272238 is about 504.3254569412.

The spelling of 128272238 in words is "one hundred twenty-eight million, two hundred seventy-two thousand, two hundred thirty-eight".