128388430 has 16 divisors (see below), whose sum is σ = 234025920. Its totient is φ = 50704992.

The previous prime is 128388413. The next prime is 128388433. The reversal of 128388430 is 34883821.

It is a self number, because there is not a number n which added to its sum of digits gives 128388430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128388433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80469 + ... + 82048.

It is an arithmetic number, because the mean of its divisors is an integer number (14626620).

Almost surely, 2^128388430 is an apocalyptic number.

128388430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128388430 is a deficient number, since it is larger than the sum of its proper divisors (105637490).

128388430 is a wasteful number, since it uses less digits than its factorization.

128388430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162603.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 128388430 is about 11330.8618383599. The cubic root of 128388430 is about 504.4776875927.

The spelling of 128388430 in words is "one hundred twenty-eight million, three hundred eighty-eight thousand, four hundred thirty".