128049238 has 8 divisors (see below), whose sum is σ = 192520800. Its totient is φ = 63875640.

The previous prime is 128049217. The next prime is 128049241. The reversal of 128049238 is 832940821.

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 = 128049197 and 128049206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73413 + ... + 75136.

It is an arithmetic number, because the mean of its divisors is an integer number (24065100).

Almost surely, 2^128049238 is an apocalyptic number.

128049238 is a deficient number, since it is larger than the sum of its proper divisors (64471562).

128049238 is a wasteful number, since it uses less digits than its factorization.

128049238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148982.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 128049238 is about 11315.8843224911. The cubic root of 128049238 is about 504.0330324995.

The spelling of 128049238 in words is "one hundred twenty-eight million, forty-nine thousand, two hundred thirty-eight".