128838230 has 16 divisors (see below), whose sum is σ = 236285424. Its totient is φ = 50562720.

The previous prime is 128838169. The next prime is 128838239. The reversal of 128838230 is 32838821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128838239) 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 7 ways as a sum of consecutive naturals, for example, 121016 + ... + 122075.

It is an arithmetic number, because the mean of its divisors is an integer number (14767839).

Almost surely, 2^128838230 is an apocalyptic number.

128838230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128838230 is a deficient number, since it is larger than the sum of its proper divisors (107447194).

128838230 is a wasteful number, since it uses less digits than its factorization.

128838230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243151.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 128838230 is about 11350.6929303898. The cubic root of 128838230 is about 505.0661351806.

The spelling of 128838230 in words is "one hundred twenty-eight million, eight hundred thirty-eight thousand, two hundred thirty".