128969318 has 8 divisors (see below), whose sum is σ = 193538280. Its totient is φ = 64456560.

The previous prime is 128969297. The next prime is 128969381. The reversal of 128969318 is 813969821.

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, 7748 + ... + 17831.

It is an arithmetic number, because the mean of its divisors is an integer number (24192285).

Almost surely, 2^128969318 is an apocalyptic number.

128969318 is a deficient number, since it is larger than the sum of its proper divisors (64568962).

128969318 is a wasteful number, since it uses less digits than its factorization.

128969318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28102.

The product of its digits is 186624, while the sum is 47.

The square root of 128969318 is about 11356.4659115413. The cubic root of 128969318 is about 505.2373723138.

It can be divided in two parts, 1289 and 69318, that added together give a palindrome (70607).

The spelling of 128969318 in words is "one hundred twenty-eight million, nine hundred sixty-nine thousand, three hundred eighteen".