128911814 has 8 divisors (see below), whose sum is σ = 196645320. Its totient is φ = 63363376.

The previous prime is 128911787. The next prime is 128911823. The reversal of 128911814 is 418119821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546119 + ... + 546354.

It is an arithmetic number, because the mean of its divisors is an integer number (24580665).

Almost surely, 2^128911814 is an apocalyptic number.

128911814 is a deficient number, since it is larger than the sum of its proper divisors (67733506).

128911814 is a wasteful number, since it uses less digits than its factorization.

128911814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092534.

The product of its digits is 4608, while the sum is 35.

The square root of 128911814 is about 11353.9338557171. The cubic root of 128911814 is about 505.1622705005.

The spelling of 128911814 in words is "one hundred twenty-eight million, nine hundred eleven thousand, eight hundred fourteen".