128933418 has 32 divisors (see below), whose sum is σ = 263678976. Its totient is φ = 42015168.

The previous prime is 128933417. The next prime is 128933459. The reversal of 128933418 is 814339821.

It is not an unprimeable number, because it can be changed into a prime (128933417) 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 15 ways as a sum of consecutive naturals, for example, 118071 + ... + 119157.

It is an arithmetic number, because the mean of its divisors is an integer number (8239968).

Almost surely, 2^128933418 is an apocalyptic number.

128933418 is an abundant number, since it is smaller than the sum of its proper divisors (134745558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128933418 is a wasteful number, since it uses less digits than its factorization.

128933418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its digits is 41472, while the sum is 39.

The square root of 128933418 is about 11354.8852041753. The cubic root of 128933418 is about 505.1904885403.

The spelling of 128933418 in words is "one hundred twenty-eight million, nine hundred thirty-three thousand, four hundred eighteen".