128616075 has 72 divisors (see below), whose sum is σ = 265760768. Its totient is φ = 58242240.

The previous prime is 128616071. The next prime is 128616077. The reversal of 128616075 is 570616821.

It is not a de Polignac number, because 128616075 - 2² = 128616071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128616071) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 199704 + ... + 200346.

Almost surely, 2^128616075 is an apocalyptic number.

128616075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128616075 is an abundant number, since it is smaller than the sum of its proper divisors (137144693).

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

128616075 is a wasteful number, since it uses less digits than its factorization.

128616075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 128616075 is about 11340.9027418456. The cubic root of 128616075 is about 504.7756739839.

The spelling of 128616075 in words is "one hundred twenty-eight million, six hundred sixteen thousand, seventy-five".