128227838 has 8 divisors (see below), whose sum is σ = 203656032. Its totient is φ = 60342496.

The previous prime is 128227831. The next prime is 128227843. The reversal of 128227838 is 838722821.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128227795 and 128227804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128227831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885670 + ... + 1885737.

It is an arithmetic number, because the mean of its divisors is an integer number (25457004).

Almost surely, 2^128227838 is an apocalyptic number.

128227838 is a deficient number, since it is larger than the sum of its proper divisors (75428194).

128227838 is a wasteful number, since it uses less digits than its factorization.

128227838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771426.

The product of its digits is 86016, while the sum is 41.

The square root of 128227838 is about 11323.7731344283. The cubic root of 128227838 is about 504.2672613547.

The spelling of 128227838 in words is "one hundred twenty-eight million, two hundred twenty-seven thousand, eight hundred thirty-eight".