128178323 has 16 divisors (see below), whose sum is σ = 162025920. Its totient is φ = 98672256.

The previous prime is 128178319. The next prime is 128178331. The reversal of 128178323 is 323871821.

It is a cyclic number.

It is not a de Polignac number, because 128178323 - 2² = 128178319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128178343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15668 + ... + 22401.

It is an arithmetic number, because the mean of its divisors is an integer number (10126620).

Almost surely, 2^128178323 is an apocalyptic number.

128178323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128178323 is a deficient number, since it is larger than the sum of its proper divisors (33847597).

128178323 is a wasteful number, since it uses less digits than its factorization.

128178323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38126.

The product of its digits is 16128, while the sum is 35.

The square root of 128178323 is about 11321.5865937597. The cubic root of 128178323 is about 504.2023456328.

The spelling of 128178323 in words is "one hundred twenty-eight million, one hundred seventy-eight thousand, three hundred twenty-three".