128130867 has 24 divisors (see below), whose sum is σ = 189755904. Its totient is φ = 83288304.

The previous prime is 128130859. The next prime is 128130901. The reversal of 128130867 is 768031821.

It is not a de Polignac number, because 128130867 - 2³ = 128130859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128130817) 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, 61078 + ... + 63140.

It is an arithmetic number, because the mean of its divisors is an integer number (7906496).

Almost surely, 2^128130867 is an apocalyptic number.

128130867 is a deficient number, since it is larger than the sum of its proper divisors (61625037).

128130867 is a wasteful number, since it uses less digits than its factorization.

128130867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2236 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128130867 is about 11319.4905804104. The cubic root of 128130867 is about 504.1401136332.

The spelling of 128130867 in words is "one hundred twenty-eight million, one hundred thirty thousand, eight hundred sixty-seven".