128614899 has 16 divisors (see below), whose sum is σ = 196491008. Its totient is φ = 73304352.

The previous prime is 128614897. The next prime is 128614903. The reversal of 128614899 is 998416821.

It is not a de Polignac number, because 128614899 - 2¹ = 128614897 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (128614897) 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, 624 + ... + 16050.

It is an arithmetic number, because the mean of its divisors is an integer number (12280688).

Almost surely, 2^128614899 is an apocalyptic number.

128614899 is a deficient number, since it is larger than the sum of its proper divisors (67876109).

128614899 is a wasteful number, since it uses less digits than its factorization.

128614899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834.

The product of its digits is 248832, while the sum is 48.

The square root of 128614899 is about 11340.8508940026. The cubic root of 128614899 is about 504.7741355085.

The spelling of 128614899 in words is "one hundred twenty-eight million, six hundred fourteen thousand, eight hundred ninety-nine".