128719275 has 24 divisors (see below), whose sum is σ = 213319680. Its totient is φ = 68487840.

The previous prime is 128719273. The next prime is 128719321. The reversal of 128719275 is 572917821.

It is not a de Polignac number, because 128719275 - 2¹ = 128719273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128719273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34134 + ... + 37716.

It is an arithmetic number, because the mean of its divisors is an integer number (8888320).

Almost surely, 2^128719275 is an apocalyptic number.

128719275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128719275 is a deficient number, since it is larger than the sum of its proper divisors (84600405).

128719275 is a wasteful number, since it uses less digits than its factorization.

128719275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075 (or 4070 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

The square root of 128719275 is about 11345.4517318615. The cubic root of 128719275 is about 504.9106465443.

The spelling of 128719275 in words is "one hundred twenty-eight million, seven hundred nineteen thousand, two hundred seventy-five".