128443430 has 32 divisors (see below), whose sum is σ = 236422368. Its totient is φ = 50227200.

The previous prime is 128443429. The next prime is 128443453. The reversal of 128443430 is 34344821.

It is a junction number, because it is equal to n+sod(n) for n = 128443393 and 128443402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117185 + ... + 118275.

It is an arithmetic number, because the mean of its divisors is an integer number (7388199).

Almost surely, 2^128443430 is an apocalyptic number.

128443430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128443430 is a deficient number, since it is larger than the sum of its proper divisors (107978938).

128443430 is a wasteful number, since it uses less digits than its factorization.

128443430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 128443430 is about 11333.2885783430. The cubic root of 128443430 is about 504.5497146222.

The spelling of 128443430 in words is "one hundred twenty-eight million, four hundred forty-three thousand, four hundred thirty".