128841830 has 16 divisors (see below), whose sum is σ = 249755184. Its totient is φ = 47572320.

The previous prime is 128841767. The next prime is 128841851. The reversal of 128841830 is 38148821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 495416 + ... + 495675.

It is an arithmetic number, because the mean of its divisors is an integer number (15609699).

Almost surely, 2^128841830 is an apocalyptic number.

128841830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128841830 is a deficient number, since it is larger than the sum of its proper divisors (120913354).

128841830 is a wasteful number, since it uses less digits than its factorization.

128841830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991111.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 128841830 is about 11350.8515099088. The cubic root of 128841830 is about 505.0708393256.

The spelling of 128841830 in words is "one hundred twenty-eight million, eight hundred forty-one thousand, eight hundred thirty".