128872164 has 12 divisors (see below), whose sum is σ = 300701744. Its totient is φ = 42957384.

The previous prime is 128872157. The next prime is 128872187. The reversal of 128872164 is 461278821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5369662 + ... + 5369685.

Almost surely, 2^128872164 is an apocalyptic number.

It is an amenable number.

128872164 is an abundant number, since it is smaller than the sum of its proper divisors (171829580).

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

128872164 is a wasteful number, since it uses less digits than its factorization.

128872164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10739354 (or 10739352 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 128872164 is about 11352.1876305847. The cubic root of 128872164 is about 505.1104734948.

It can be divided in two parts, 12887 and 2164, that added together give a palindrome (15051).

The spelling of 128872164 in words is "one hundred twenty-eight million, eight hundred seventy-two thousand, one hundred sixty-four".