128715696 has 40 divisors (see below), whose sum is σ = 369462960. Its totient is φ = 42905088.

The previous prime is 128715679. The next prime is 128715707. The reversal of 128715696 is 696517821.

128715696 is a `hidden beast` number, since 1 + 2 + 87 + 1 + 569 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148545 + ... + 149408.

It is an arithmetic number, because the mean of its divisors is an integer number (9236574).

Almost surely, 2^128715696 is an apocalyptic number.

128715696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128715696 is an abundant number, since it is smaller than the sum of its proper divisors (240747264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128715696 is a wasteful number, since it uses less digits than its factorization.

128715696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297970 (or 297958 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 128715696 is about 11345.2940023606. The cubic root of 128715696 is about 504.9059668723.

The spelling of 128715696 in words is "one hundred twenty-eight million, seven hundred fifteen thousand, six hundred ninety-six".