128028716 has 12 divisors (see below), whose sum is σ = 229261032. Its totient is φ = 62525568.

The previous prime is 128028701. The next prime is 128028727. The reversal of 128028716 is 617820821.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372005 + ... + 372348.

It is an arithmetic number, because the mean of its divisors is an integer number (19105086).

Almost surely, 2^128028716 is an apocalyptic number.

It is an amenable number.

128028716 is a deficient number, since it is larger than the sum of its proper divisors (101232316).

128028716 is a wasteful number, since it uses less digits than its factorization.

128028716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744400 (or 744398 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 128028716 is about 11314.9775077107. The cubic root of 128028716 is about 504.0061045284.

The spelling of 128028716 in words is "one hundred twenty-eight million, twenty-eight thousand, seven hundred sixteen".