128168079 has 24 divisors (see below), whose sum is σ = 189383040. Its totient is φ = 77025312.

The previous prime is 128168077. The next prime is 128168087. The reversal of 128168079 is 970861821.

It is not a de Polignac number, because 128168079 - 2¹ = 128168077 is a prime.

It is a super-3 number, since 3×128168079³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128168079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128168077) 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, 18862 + ... + 24740.

It is an arithmetic number, because the mean of its divisors is an integer number (7890960).

Almost surely, 2^128168079 is an apocalyptic number.

128168079 is a deficient number, since it is larger than the sum of its proper divisors (61214961).

128168079 is a wasteful number, since it uses less digits than its factorization.

128168079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951 (or 5938 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 128168079 is about 11321.1341746311. The cubic root of 128168079 is about 504.1889133396.

The spelling of 128168079 in words is "one hundred twenty-eight million, one hundred sixty-eight thousand, seventy-nine".