128368319 has 8 divisors (see below), whose sum is σ = 129843120. Its totient is φ = 126899136.

The previous prime is 128368259. The next prime is 128368337. The reversal of 128368319 is 913863821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128368319 is a prime.

It is a super-2 number, since 2×128368319² = 32956850645771522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128368379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58547 + ... + 60699.

It is an arithmetic number, because the mean of its divisors is an integer number (16230390).

Almost surely, 2^128368319 is an apocalyptic number.

128368319 is a deficient number, since it is larger than the sum of its proper divisors (1474801).

128368319 is a wasteful number, since it uses less digits than its factorization.

128368319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809.

The product of its digits is 62208, while the sum is 41.

The square root of 128368319 is about 11329.9743600769. The cubic root of 128368319 is about 504.4513454460.

The spelling of 128368319 in words is "one hundred twenty-eight million, three hundred sixty-eight thousand, three hundred nineteen".