128819414 has 4 divisors (see below), whose sum is σ = 193229124. Its totient is φ = 64409706.

The previous prime is 128819413. The next prime is 128819423. The reversal of 128819414 is 414918821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 414918821 = 53 ⋅7828657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128819413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32204852 + ... + 32204855.

It is an arithmetic number, because the mean of its divisors is an integer number (48307281).

Almost surely, 2^128819414 is an apocalyptic number.

128819414 is a deficient number, since it is larger than the sum of its proper divisors (64409710).

128819414 is an equidigital number, since it uses as much as digits as its factorization.

128819414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64409709.

The product of its digits is 18432, while the sum is 38.

The square root of 128819414 is about 11349.8640520493. The cubic root of 128819414 is about 505.0415467566.

It can be divided in two parts, 1288 and 19414, that added together give a palindrome (20702).

The spelling of 128819414 in words is "one hundred twenty-eight million, eight hundred nineteen thousand, four hundred fourteen".