128305371 has 8 divisors (see below), whose sum is σ = 171130960. Its totient is φ = 85508352.

The previous prime is 128305369. The next prime is 128305391. The reversal of 128305371 is 173503821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128305371 - 2¹ = 128305369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128305391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7815 + ... + 17823.

It is an arithmetic number, because the mean of its divisors is an integer number (21391370).

Almost surely, 2^128305371 is an apocalyptic number.

128305371 is a deficient number, since it is larger than the sum of its proper divisors (42825589).

128305371 is a wasteful number, since it uses less digits than its factorization.

128305371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14285.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 128305371 is about 11327.1960784653. The cubic root of 128305371 is about 504.3688759930.

The spelling of 128305371 in words is "one hundred twenty-eight million, three hundred five thousand, three hundred seventy-one".