128441995 has 24 divisors (see below), whose sum is σ = 177485040. Its totient is φ = 88482240.

The previous prime is 128441983. The next prime is 128442007. The reversal of 128441995 is 599144821.

It is an interprime number because it is at equal distance from previous prime (128441983) and next prime (128442007).

It is not a de Polignac number, because 128441995 - 2¹³ = 128433803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16621 + ... + 23089.

It is an arithmetic number, because the mean of its divisors is an integer number (7395210).

Almost surely, 2^128441995 is an apocalyptic number.

128441995 is a deficient number, since it is larger than the sum of its proper divisors (49043045).

128441995 is a wasteful number, since it uses less digits than its factorization.

128441995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523 (or 6504 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 128441995 is about 11333.2252690926. The cubic root of 128441995 is about 504.5478356328.

The spelling of 128441995 in words is "one hundred twenty-eight million, four hundred forty-one thousand, nine hundred ninety-five".