128530395 has 40 divisors (see below), whose sum is σ = 263323104. Its totient is φ = 58755456.

The previous prime is 128530333. The next prime is 128530399. The reversal of 128530395 is 593035821.

It is not a de Polignac number, because 128530395 - 2⁶ = 128530331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128530399) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19834 + ... + 25503.

Almost surely, 2^128530395 is an apocalyptic number.

128530395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128530395 is an abundant number, since it is smaller than the sum of its proper divisors (134792709).

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

128530395 is an equidigital number, since it uses as much as digits as its factorization.

128530395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45361 (or 45352 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 128530395 is about 11337.1246354620. The cubic root of 128530395 is about 504.6635605044.

The spelling of 128530395 in words is "one hundred twenty-eight million, five hundred thirty thousand, three hundred ninety-five".