128718382 has 8 divisors (see below), whose sum is σ = 207929736. Its totient is φ = 59408472.

The previous prime is 128718377. The next prime is 128718409. The reversal of 128718382 is 283817821.

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, 2475328 + ... + 2475379.

It is an arithmetic number, because the mean of its divisors is an integer number (25991217).

Almost surely, 2^128718382 is an apocalyptic number.

128718382 is a deficient number, since it is larger than the sum of its proper divisors (79211354).

128718382 is a wasteful number, since it uses less digits than its factorization.

128718382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950722.

The product of its digits is 43008, while the sum is 40.

The square root of 128718382 is about 11345.4123768156. The cubic root of 128718382 is about 504.9094789226.

The spelling of 128718382 in words is "one hundred twenty-eight million, seven hundred eighteen thousand, three hundred eighty-two".